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Background: Tobacco consumption is the primary cause for cancers in men and women in India. Second hand smoking also has toxins in the similar concentration affecting children in particular leading to many health-related conditions including neurological disorders. The present study was done with the hypothesis that passive smoking in children causes delay in their reaction time when compared to the children of non-smokers which indicates cognition deficit. Aims and Objectives: The objectives of the study are as follows: (1) Comparison of the visual simple reaction time (VSRT) and visual choice reaction time (VCRT) among the children of chronic smokers and non-smokers and (2) to compare the auditory simple reaction time (ASRT) and auditory choice reaction time (ACRT) among the children of chronic smokers and non-smokers. Materials and Methods: This was a cross-sectional study. After obtaining necessary permission and consents, 30 children aged between 8 and 14 years with exposure to passive smoking as cases and 30 children of non-smoking parents as controls were included in the study. Audio-visual reaction timer was used. Results: Student’s “t” test was used for analysis. Mean value of VSRT showed 248.3 ms among controls and 277.7 ms in cases; VCRT among controls was 277.4 ms and 309.1 ms in cases (P < 0.05). Means of ASRT in controls was 213 ms and 250.4 in cases; ACRT in controls was 244 ms and among cases was 272.4 ms (P < 0.05). Conclusion: Significant delay in VSRT, VCRT, and ASRT was seen among the children exposed to tobacco smoke. ACRT also showed delayed response but not statistically significant.
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Background Previous studies have shown that active smoking during pregnancy can reduce the level of neonatal cord blood leptin, and thereby affect birth weight. However, few studies have studied the association of passive smoking during pregnancy with leptin in neonatal cord blood and birth weight. Objective To explore the effects of passive smoking in varied pregnancy stages and entire pregnancy on neonatal cord blood leptin level and birth weight in a certain rural area of Yunnan, and potential mediating role of cord blood leptin. Methods Based on a prospective prenatal cohort study conducted in Xuanwei County, Yunnan Province, a total of 545 mother-infant pairs were included in this study from early pregnancy enrollment to delivery. The demographic information and reproductive history of the subjects were collected by questionnaire. The urine samples of pregnant women in the first, second, and third trimesters of pregnancy were collected during regular prenatal examinations. Umbilical cord blood samples were collected from newborns at birth. The concentration of urine cotinine (UC) was measured by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). According to the results of UC level during pregnancy, the study subjects were divided into three groups: negative group (<LOD), low exposure group (LOD-M), and high exposure group(>M). The level of leptin in cord blood was detected by ELISA. Multiple linear regression was used to analyze the effect of passive smoking on umbilical cord blood leptin in newborns during pregnancy. Path analysis was used to explore the relationship among passive smoking during pregnancy, neonatal cord blood leptin, and birth weight. Results The average exposure rate of passive smoking during pregnancy was 87.28%, and the exposure rate for entire pregnancy was 76.88%. The median concentration of leptin in neonatal cord blood was 4.17 μg·L−1. After adjusting for maternal age, ethnicity, educational level, pre-pregnancy body mass index (BMI), gestational weight gain, parity, annual household income, infant sex, and birth weight, we found that low level (b=−3.388, P=0.001) and high level (b=−2.738, P=0.006) of passive smoking in the first trimester of pregnancy had negative associations with leptin concentration of cord blood by multiple linear model. The path analysis results showed that passive smoking in the first trimester and pre-pregnancy BMI directly affected leptin levels, and the sizes of direct effects were −0.073 and −0.087 (both P<0.05) respectively. Passive smoking in late pregnancy, gestational weight gain, premature, newborn girls, parity, and pre-pregnancy BMI directly affected birth weight, and the sizes of direct effects were −0.063, 0.191, −0.301, −0.128, −0.121, and 0.167 (all P<0.05), respectively. No mediating role of leptin was found in the effect of passive smoking on neonatal birth weight. Conclusion Passive smoking exposure during pregnancy is common among rural women in Yunnan Province. Passive smoking in the first trimester may be key in decreasing the leptin level of neonatal cord blood. Passive smoking in third trimester may lead to a decrease in birth weight. No evidence shows that leptin mediates the relationship between passive smoking and birth weight.
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One of the most consumed and readily available products causing psychological dependence among the population is tobacco and its related products. Though the government of India is undertaking measures to reduce tobacco consumption, factors like easy availability, lack of monitoring of tobacco use among youngsters, low cost and rapid absorption into the central nervous system is prompting people from a young age to the elderly to consume tobacco-related products. Legislative measures to reduce tobacco consumption seldom reach or benefit people as laws differ across States. This increases the prevalence of respiratory diseases like Chronic Obstructive Pulmonary Disease (COPD) and lung cancer. This review ar-ticle discusses the status of tobacco consumption in India with emphasis on tobacco-related legislation in States and associated health inequities.
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Background: Passive smoking is a world health problem and part of the tobacco epidemic which victimizes mostly adolescents. Research articles have addressed the relation between passive smoking and respiratory efficiency in adult population and escalated the hazard of chronic obstructive pulmonary disease and lung cancer among adult passive smokers. The present study was conducted to analyze the effects of exposure to passive smoke on pulmonary functions among nonsmoking individuals. Aim and Objectives: The study was determined to assess the effects of passive smoking on pulmonary functions among individuals in urban region. Materials and Methods: The present study was conducted on smokers, passive smokers, and nonsmokers (control), aged between 17 and 25 years. Ninety healthy individuals were placed in three different groups on the basis of questionnaire (Group A: active smoker, Group B: passive smoker, Group C: control). Study was done with the help of spirometer and pulse oximeter. Results: Forced expiratory flow25–75%, Forced expiratory volume in 1 second/Forced vital capacity % values were significantly reduced in passive smokers as compared to control individuals (P < 0.001, P < 0.05). SpO2 level was decreased in passive smokers and active smokers, but it was not statistically significant. Conclusions: The present study showed a strong association between passive smoking and pulmonary abnormalities in individuals exposed to passive smoke. Health hazards caused by passive smoking should be controlled by creating awareness and regular health check-ups among people.
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Background:Acute Lower Respiratory Tract Infection (LRTI) is the major cause of morbidity and mortality among children in developing countries. The present study is an attempt to understand the various risk factors associated with acute LRTI; using these observations strategies can be implemented to reduce the burden of the disease.Objectives(1) To determine association of risk factors like socio-demographic, environmental, Natal and Nutritional with acute LRTI (2) To categorize the studied risk factors as Definite, Probable and Possible factors.Material & Methodology:Study was conducted at tertiary care hospital over one year. Children of age between 6 months to 60 months admitted in pediatric wards with acute LRTI were included and those who had chronic illness were excluded. It is questioner based observational crosssectional study. Detailed history of exposure to various risk factors were taken on the basis of predesigned Proforma. Data was analyzed as per standard statistical method and significance was noted. Result:Total 241 children were enrolled and total 20 risk factors were studied; divided into sociodemographic, environmental, perinatal and nutritional headings. We found exposure to biomass fuel, passive smoking, and lack of exclusive breastfeeding, LBW and malnutrition as definitive risk factor as their association with LRTI was significant (p < 0.05). We observed and categorized other factors into possible and probable category as per the occurrence. Conclusion:We have categorized the risk factors as: Definite, Possible and Probable. Since these risk factors are potentially preventable, health policies targeted at reducing their prevalence provide a basis for decreasing the burden of LRTI in children.
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Abstract Introduction Mucociliary clearance (MCC) is the first line of defense of the pulmonary system. Mucociliary clearance impairment may lead to increased risk of respiratory infections, lung injury, pulmonary repair problems, chronic dysfunctions and progression of respiratory diseases. Objective To characterize the MCC of active and passive smokers and individuals with chronic obstructive pulmonary disease (COPD) and compare the MCC behaviors between men and women of different age groups. Methods Patients with COPD (current smokers and ex-smokers) and apparently healthy individuals (current smokers, passive smokers and nonsmokers) were evaluated. All of the subjects underwent lung function and MCC evaluation (saccharin transport test [STT]). Smokers (with or without COPD) were questioned about the smoking history. Results A total of 418 individuals aged 16 to 82 years old, of both genders, were evaluated. The STT values of active and passive smokers were statistically higher than those of the control group (p < 0.01). Men of the control group had lower values of STT than active smokers (9.7 ± 7.1 and 15.4 ± 10.1 minute, respectively, p < 0.01). In addition, higher MCC velocity was observed in women that are current smokers (11.7 ± 6.8 minute) compared with men (15.4 ± 10.1 minute) in this group (p = 0.01). Among the younger age groups (< 50 years old), only passive smokers presented higher STT in relation to the control group. Conclusion Passive and active smoking are factors that influence negatively the MCC, and passive smokers may present losses of this mechanism at a younger age. Additionally, male smokers present worse MCC than male nonsmokers.
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BACKGROUND: Cigarette smoke contains a large number of types of oxygen free radicals and cytotoxic components. Passive smoking will impair respiratory and cardiovascular system functions, and result in oxidative damage of skeletal muscle and decreased exercise ability. OBJECTIVE; To investigate the effect of phellinus igniarius crude polysaccharides on the exercise capacity and free radical metabolism of skeletal muscle in mice suffering passive smoking, so as to provide ideas for the prevention and treatment of peroxidative damage of skeletal muscle and depression of exercise capacity in rats suffering passive smoking. METHODS: Twenty-one male Kunming mice were randomly assigned to three groups: Gavage with phellinus igniarius crude polysaccharides and suffering passive smoking (phellinus group), gavage with distilled water and suffering passive smoking (control group), and only gavage with distilled water (blank group). After 4 consecutive weeks, the mice were forced to take an exhausted swimming, and sacrificed subsequently. Exhausted swimming time was recorded. The bilateral gastrocnemius muscle tissues were obtained, in which the vitality of superoxide dismutase, catalase, glutathion reductase and Ca2+-Mg2+-ATP and Na+-K+-ATP activity, and the concentration of malonaldehyde were measured. RESULTS AND CONCLUSION: (1) The swimming time of mice in the control group was shorter than that in the blank group (P 0.6, P 0.6, P < 0.05), and negatively correlated with the concentration of malonaldehyde (r < -0.6, P < 0.05). (5) In summary, phellinus igniarius crude polysaccharides can improve the antioxidative enzyme activity of skeletal muscle, inhibit lipid peroxidation reaction, and thus increase exercise ability of mice suffering passive smoking. The study was approved by the Ethical Committee of Jiangxi Normal University, approval No. 201703.
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Objective @#To learn the passive smoking exposure and hazard awareness among the residents aged 18 years and over in Zhengzhou,so as to provide evidence for tobacco control. @*Methods@#By multi-stage stratified and clustered sampling method,the residents aged 18 years and over in Zhengzhou were selected. From June to October in 2018,a questionnaire for risk factors of non-communicable diseases,designed by Chinese Center for Disease Control and Prevention,was used to collect their passive smoking exposure and hazard awareness and then analyzed.@*Results @#A total of 6 793 questionnaires were qualified in 6 809 questionnaires and the effective rate was 99.77%. Among 5 387 non-smokers,2 131 people were exposed to passive smoking,and the crude and standardized rate was 39.56% and 40.14%. The standardized rate of passive smoking exposure was higher in men than in women（42.44% vs. 38.67%,P<0.05）,in rural residents than in urban residents（43.90% vs. 36.62%,P<0.05）,and it decreased with the age increase（P<0.05）. The standardized rate of passive smoking exposure in family,indoor workplace and indoor public place was 30.99%,36.99% and 68.02%,respectively. The standardized awareness rate of “passive smoking exposure may lead to heart disease,lung disease in children and lung cancer in adults” was 56.63%,which was higher in urban rural residents than in rural residents（75.69% vs. 36.33%,P<0.05）. @*Conclusions@#The passive smoking exposure rate was high in Zhengzhou,especially in indoor public places. The awareness of the hazards of passive smoking exposure was scarce, especially in rural residents.
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Objectives: This study aimed to throw some light on knowledge, attitude and the histological changes in human placenta exposed to passive smoking. Methods: Hospital-based studies were conducted to assess the knowledge and attitude of passive smoking in pregnant women and non-smoker controls (n=50) were selected. A structured questionnaire was used for data collection. Differences between the 2 groups were determined by the Chi-square test and the significance level was set at p<0.05. Total 50 placentas were collected immediately from interviewed pregnant women after delivery (38-40 weeks of gestation) from the Department of Obstetrics and Gynecology. According to the result yielded from the questionnaire 20 out of 50 placentas, showed no history of exposure to tobacco smoke, or consumption of tobacco in any form, and were labeled as controls. About 30 placentas were collected from passive smokers mostly exposed to smoke. The pregnant mother exposed to tobacco used by a chain-smoking husband or very close relative in a nuclear family was designated as a passive smoker. Results: The study indicated that there are significant statistical differences found among the pregnant women’s on their knowledge, attitude in term of pregnancy outcome and adverse effect on labor. The placenta exposed to passive smoking showed an increase in the connective tissue stroma in chorionic villi (intravillous fibroid) and some of them lost their trophoblastic covering. Also, the lumen of blood capillaries appeared obliterated and irregular. Conclusion: Our findings suggested that quantitative parameters of the placenta significantly showed changes in placenta from the passive smoker group compared to the controls. These changes can probably be associated with pregnancy complications in smoking mothers and may affect the development and survival of the fetus and even it’s future.
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Background: Acute severe pneumonia is the leading cause of death in children below five years of age. India tops in the list amongst the 15 countries having a high incidence of childhood pneumonia with 43 million episodes of pneumonia annually. Identification of modifiable risk factors of acute severe pneumonia can help in reducing the burden of disease.Methods: A hospital-based case control study was undertaken to determine risk factors associated with acute severe pneumonia in under-five children. A case definition of acute severe pneumonia as given by world health organization (WHO) was used for cases. Healthy children attending Pediatrics outpatient Department for immunization during study period were enrolled as controls. Details of potential risk factors in cases and controls were recorded in pre-designed proforma. 732 children including 366 cases and 366 controls were enrolled in the study.Results: On stepwise logistic regression analysis it was found that low' literacy status of the mother (OR:9.46; 95%CI:7.31-19.0); inappropriate immunization for age (OR:38.04; 95%CI 14.59-110.18);cooking fuel other than liquid petroleum gas (OR:3.79; 95%CI: 2.40-6.78); low socioeconomic status (OR: 6.12; 95%CI: 2.42-35.48); overcrowding (OR:1.21; 95%CI: 1.03- 2.21) and upper respiratory infection in family (OR:5.08; 95%CI: 3.79-7.67) were the significant contributors to the occurrence of acute severe pneumonia in children under five years.Conclusions: Low literacy status of mother, incomplete immunization status, use of fuel other than LPG, low socioeconomic status, overcrowding, family history of URTI emerged as risk factors for occurrence of acute severe pneumonia in under five children.
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Objective@#To understand the trends of smoking and passive smoking exposure in adults in Shaanxi province from 2007 to 2015.@*Methods@#Data was from China Chronic Disease and Risk Factor Surveillance in 2007, 2010, 2013 and 2015 to calculate the rates of smoking, smoking cessation and passive smoking exposure, as well as the amount of smoking of smokers indicated by each surveillance. Cochran-Armitage test was used to assess the trends across survey periods. The weighting rate was calculated by using sampling weight and data from the 6th national census in 2010. Sensitivity analysis was done to test the trends as well.@*Results@#The results of the surveillance indicated that the smoking rate in 2007 was 38.26%, highest in the results of four surveys, it decreased to 30.95% in 2013 and then increased to 34.11% in 2015 (Cochran-Armitage test: Z=2.46, P=0.014). The amount of smoking increased from 16.90 cigarettes per day in 2007 to 17.76 cigarettes per day in 2015. The overall rate of smoking cessation was 11.02% in 2007 and 16.95% in 2015 (Cochran- Armitage test: Z=-4.18, P<0.01). We observed the passive smoking exposure rate was 48.10% in 2010 and 63.88% in 2015 (Cochran-Armitage test: Z=-10.60, P<0.01). We found no difference in trends by sensitivity analysis.@*Conclusions@#The smoking rate and amount of cigarettes smoked in adults in Shaanxi remained stable and at a high level. The rate of smoking cessation increased gradually, while the passive smoking exposure rate increased rapidly.
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Objective@#To analyze the disease burden of stroke and its health loss attributable to passive smoking in people aged 60 years and over in Jiangsu province.@*Methods@#Data were retrieved from the Chronic and Non-communicable Diseases and Risk Factors Surveillance in Jiangsu in 2013 and the death registry system in Jiangsu. Combined with the method in Global Burden of Disease Study 2016 (GBD2016), the indicators, such as population attributable fraction (PAF) and disability-adjusted life years (DALY) for stroke due to passive smoking were calculated.@*Results@#In 2013, the mortality rate, age-standardized mortality rate, DALY and DALY rate of stroke in people aged 60 years and over in Jiangsu were 718.15/100 000, 439.28/100 000, 1 179 602 person years and 9 234.99/100 000, respectively. Year of life lost (YLL) accounted for 87.00% of the total DALY. The DALY and corresponding rate of stroke increased rapidly with age, and were higher in women (612 084 person years and 9 319.71/100 000, respectively) than those in men (567 518 person years and 9 145.33/100 000, respectively). The prevalence of passive smoking was 34.04% in people aged 60 years and over in Jiangsu. The PAF, attributable DALY, attributable DALY rate and its age- standardized rate of stroke due to passive smoking in people aged 60 years and over in Jiangsu were 3.88%, 45 769 person years, 358.12/100 000 and 920.64/100 000, respectively; and were also higher for men (4.35%, 24 687 person years, 397.82/100 000 and 515.30/100 000, respectively) than those for women (3.44%, 21 056 person years, 320.60/100 000, 405.34/100 000, respectively).@*Conclusions@#The disease burden of stroke was heavy in the elderly in Jiangsu, and passive smoking might have great influence on the disease burden of stroke. Prevention and control of stroke and passive smoking exposure should be taken actively to improve health for the elderly.
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As well as active smoking, passive smoking is associated with a high risk of developing cardiovascular disease. The antioxidant vitamin C may inhibit the unfavorable effects of passive smoking. In this study, we investigated the effects of vitamin C ingestion on changes in the flow-mediated dilatation (FMD) at the brachial artery in patients exposed to transient passive smoking. The study participants included seven healthy adult males who were examined by high-resolution ultrasonography of the brachial artery before and after 15-minute of passive smoking. FMD was used to examine the endothelial function. Randomized crossover controlled trial, measurements were performed on two different days 120-minute after the oral administration of 1000mg of ascorbic acid (VC trial) or a placebo (P trial). Although the FMD values decreased after passive smoking in both trials, the FMD values of the VC trial were higher than those of the P trial, with significant differences between the trials observed immediately and 30-minute after passive smoking. The results of this study suggested that the ingestion of vitamin C may suppress the decrease in the vascular endothelial function caused by transient passive smoking.
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Abstract@#Introduction: Second hand smoke exposure to cigarette smoke leads to many medical conditions including asthma and lung cancer. Women are the most vulnerable adults of passive smoking at home. Even though Malaysia had its own smoke- free policy, the smoke- free home is voluntary in nature. Thus, this study was aimed to explore the practice of voluntary smoke- free- home among women in Alor Gajah and its determinants. Methods: A cross-sectional study based on multistage sampling was conducted among 180 non- smoking women in areas implemented Community Intervention Program (KOSPEN), which emphasized on healthy lifestyle, in Alor Gajah, Melaka from April 2018 to May 2018. Data on sociodemographic characteristic, characteristic of second hand smoke (SHS) exposure at home, knowledge, attitude and avoidance behaviour from SHS were collected using questionnaires. The data were then analysed using IBM Statistical Package for Social Science (SPSS) version 24.0 involving descriptive and inferential statistics. Results: Majority of the respondents practised smoke- free home (72.8%). The predictors of smoke- free home were those who attained higher education (AOR= 11.939, 95% CI 1.175- 121.277), did not live with any children (AOR= 3.546, 95% CI 0.985- 12.765) and lived with smokers other than their husband (AOR= 3.793, 95% CI 1.192- 12.076). Conclusion: Education level and household factors were significant predictors of smoke- free home. Thus, few measures were suggested to increase tobacco bans at home among women including periodic health programs, community empowerment programs and creating smoke- free housing.
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BACKGROUND@#There have been inconsistent findings reported on maternal passive smoking during pregnancy and child risk of ADHD. In this study, ADHD symptoms at pre-school age children in association with prenatal passive and active tobacco smoke exposure determined by maternal plasma cotinine levels in the third trimester were investigated.@*METHODS@#This was a follow-up study of the birth cohort: the Hokkaido Study on Environment and Children's Health. Children whose parents answered Strengths and Difficulties Questionnaire (SDQ) to identify child ADHD symptoms (hyperactivity/inattention and conduct problems) and total difficulties at age 5 years with available maternal plasma cotinine level at the third trimester were included (n = 3216). Cotinine levels were categorized into 4 groups; ≦ 0.21 ng/ml (non-smoker), 0.22-0.51 ng/ml (low-passive smoker), 0.52-11.48 ng/ml (high-passive smoker), and ≧ 11.49 ng/ml (active smoker).@*RESULTS@#Maternal cotinine levels of active smokers were significantly associated with an increased risk of total difficulties (OR = 1.67) and maternal low- and high-passive smoking also increased the risk (OR = 1.11, 1.25, respectively) without statistical significance. Similarly, maternal cotinine levels of active smokers were associated with an increased risk of hyperactivity/inattention (OR = 1.49). Maternal low- and high-passive smoking and active smoking increased the risk of hyperactivity/inattention (OR = 1.45, 1.43, and OR = 1.59, respectively) only in boys.@*CONCLUSION@#Our findings suggested that maternal active smoking during pregnancy may contribute to the increased risk of child total difficulties and hyperactivity/inattention at pre-school age. Pregnant women should be encouraged to quit smoking and avoid exposure to tobacco smoke.
Subject(s)
Adult , Child, Preschool , Female , Humans , Male , Pregnancy , Attention Deficit Disorder with Hyperactivity , Epidemiology , Psychology , Cotinine , Blood , Follow-Up Studies , Japan , Epidemiology , Maternal Exposure , Mothers , Pregnancy Trimester, Third , Prenatal Exposure Delayed Effects , Epidemiology , Risk , Sex Factors , Tobacco Smoking , EpidemiologyABSTRACT
PURPOSE: The association between tobacco smoking and thyroid cancer remains uncertain. We evaluated the associations of active and passive smokingwith the risk of papillary thyroid cancer (PTC), the most common type of thyroid cancer, and with the BRAF(V600E) mutation, the most common oncogenic mutation in PTC related to poor prognosis. MATERIALS AND METHODS: We conducted this study with newly diagnosed PTC patients (n=2,142) and community controls (n=21,420) individually matched to cases for age and sex. Information on active and passive smoking and potential confounders were obtained from structured questionnaires, anthropometric measurements, and medical records. BRAF(V600E) mutation status was assessed in PTC patients. We evaluated the associations of active and passive smoking with PTC and BRAF(V600E) mutation risk using conditional and unconditional logistic regression models, respectively. RESULTS: We did not find associations between exposure indices of active and passive smoking and PTC risk in both men and women, except for the association between current smoking and lower PTC risk. Cumulative smoking ≥ 20 pack-years was associated with lower BRAF(V600E) mutation risk in male PTC patients (odds ratio [OR], 0.55; 95% confidence interval [CI], 0.30 to 1.00). The CI for the association was wider in female PTC patients (OR, 0.23; 95% CI, 0.02 to 2.62), possibly owing to a smaller sample size in this stratum. CONCLUSION: We did not find consistent associations between active and passive smoking and PTC risk. Cumulative smoking ≥ 20 pack-years was associated with lower BRAF(V600E) mutation risk in male PTC patients.
Subject(s)
Female , Humans , Male , Case-Control Studies , Logistic Models , Medical Records , Prognosis , Sample Size , Smoke , Smoking , Thyroid Gland , Thyroid Neoplasms , Tobacco Smoke PollutionABSTRACT
Objective The number of children with polydactyly is increasing.In addition to genetic factors,an influence of maternal behavior or environmental effects during pregnancy is becoming increasingly apparent.However,epidemiological data on these effects are lacking.Methods This hospital-based,case-control study enrolled 143 infants with polydactyly and 286 controls without genetic diseases to evaluate the association between active and passive maternal smoking during pregnancy and the likelihood of giving birth to a child with polydactyly.Results Active and passive maternal smoking during pregnancy was associated with an increased risk of giving birth to a child with polydactyly (active smoking:OR=4.74,95％CI:1.43-15.65,P=0.011;passive smoking:OR=2.42,95％CI:1.32-4.44,P=0.004).After adjusting for confounders,smoking during pregnancy remained significant influence on polydactyly (active smoking:aOR=7.27,95％ CI:1.72-30.72,P=0.007;passive smoking:aOR=2.41,95％ CI:1.11-5.23,P=0.026).Conclusion Active and passive maternal smoking during pregnancy appears to be a risk factor for polydactyly in newborns.
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Objective To describe and analyze the passive smoking exposure level in adults aged ≥40 years in China.Methods A total of 75 107 adults from 125 sites of COPD surveillance points in China were surveyed by electronic questionnaire during face to face interviews.After comprehensive weighting of the samples,the passive smoking exposure level was analyzed.Results The passive smoking exposure rate of the adults aged ≥40 years was 44.9％ (95％CI:42.3％-47.5％).The exposure rate was highest in those aged from 40 to 49 years (51.0％,95％CI:47.9％-54.1％) in term of age groups,in those with senior high school education level and above (48.6％,95％ CI:44.9％-52.2％) in term of education level,and in office workers (57.7％,95％CI:51.8％-63.7％) in term of occupation.The adults reporting passive smoking exposure every days in a week accounted for 27.7％ (95％CI:25.5％-29.8％),and those reporting household passive smoking exposure accounted for 28.3％ (95％ CI:26.2％-30.5％).Logistic regression analysis showed that the passive smoking exposure level was different in different age groups and occupation groups.Conclusion The passive smoking exposure level is still high in adults in China.Age and occupation are the influencing factors of passive smoking exposure level.
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Objective The number of children with polydactyly is increasing.In addition to genetic factors,an influence of maternal behavior or environmental effects during pregnancy is becoming increasingly apparent.However,epidemiological data on these effects are lacking.Methods This hospital-based,case-control study enrolled 143 infants with polydactyly and 286 controls without genetic diseases to evaluate the association between active and passive maternal smoking during pregnancy and the likelihood of giving birth to a child with polydactyly.Results Active and passive maternal smoking during pregnancy was associated with an increased risk of giving birth to a child with polydactyly (active smoking:OR=4.74,95％CI:1.43-15.65,P=0.011;passive smoking:OR=2.42,95％CI:1.32-4.44,P=0.004).After adjusting for confounders,smoking during pregnancy remained significant influence on polydactyly (active smoking:aOR=7.27,95％ CI:1.72-30.72,P=0.007;passive smoking:aOR=2.41,95％ CI:1.11-5.23,P=0.026).Conclusion Active and passive maternal smoking during pregnancy appears to be a risk factor for polydactyly in newborns.
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Objective To describe and analyze the passive smoking exposure level in adults aged ≥40 years in China.Methods A total of 75 107 adults from 125 sites of COPD surveillance points in China were surveyed by electronic questionnaire during face to face interviews.After comprehensive weighting of the samples,the passive smoking exposure level was analyzed.Results The passive smoking exposure rate of the adults aged ≥40 years was 44.9％ (95％CI:42.3％-47.5％).The exposure rate was highest in those aged from 40 to 49 years (51.0％,95％CI:47.9％-54.1％) in term of age groups,in those with senior high school education level and above (48.6％,95％ CI:44.9％-52.2％) in term of education level,and in office workers (57.7％,95％CI:51.8％-63.7％) in term of occupation.The adults reporting passive smoking exposure every days in a week accounted for 27.7％ (95％CI:25.5％-29.8％),and those reporting household passive smoking exposure accounted for 28.3％ (95％ CI:26.2％-30.5％).Logistic regression analysis showed that the passive smoking exposure level was different in different age groups and occupation groups.Conclusion The passive smoking exposure level is still high in adults in China.Age and occupation are the influencing factors of passive smoking exposure level.