Relationship between sputum smear grading and smear conversion rate and treatment outcome in the patients of pulmonary tuberculosis undergoing DOTS- A prospective cohort study.

Background: The Smear Conversion Rate (SCR) is an operational indicator for the Directly Observed Treatment Shortcourse (DOTS) strategy of Revised National Tuberculosis Control Programme (RNTCP) in India. The present study was undertaken to determine the relationship between sputum smear grading and smear conversion rate among the Category I smear positive pulmonary tuberculosis patients undergoing DOTS. Methods: A prospective cohort study was conducted among the Category I smear positive pulmonary tuberculosis patients registered under DOTS at GTB, Karawal Nagar and Shahdara Chest Clinics of Delhi. Sample size for the present study was calculated on the basis of a similar study of a retrospective design conducted at LRS Institute of Tuberculosis and Respiratory diseases New Delhi, India using statistical software Epi Info version 6. Accordingly, a total of 338 sputum smear positive patients with 169 each in the High Positive Cohort (pre-treatment sputum grading 3+) and Low Positive Cohort (pre-treatment sputum grading 2+, 1+ and Scanty) were followed periodically at two months ( end of Intensive Phase) , at three months (after one month extension of Intensive Phase ), at two months of Continuation Phase and then at the end of the treatment to record the sputum AFB result and treatment outcome as per the RNTCP guidelines. Data was analyzed using SPSS Version -15. Results: After two months (end of the intensive phase), SCR was 57.9% (98 of 169) among the High Positive and 71.6% (121 of 169) in the Low positive cohort ( p -0.008). After three months (one month’s extension of intensive phase), cumulative SCR was 85.2%( 144 of 169)) in the High Positive and 92.3%(156 of 169) in the Low Positive cohort (p- 0.03). Cure rate was 82.8%(140 of 169) in the High Positive and 84.6%(143 of 169) in the Low Positive cohort. Default rate was 3% (five of 169) in the High Positive and 5.3% (nine of 169) in the Low Positive cohort. Failure rate was 11.2% (19 of 169) in the High positive and 6.5% in the Low positive Cohort (11 of 169). Only one patient (0.6%) in each High and Low Positive cohort died during course of treatment ( p -0.631). Treatment outcome was further compared among the patients according to their sputum status achieved at two and three months of the treatment after ignoring their initial sputum status. The cure rates for the patients who converted at two months was 90.9% (199 of 219) and for those who did not convert at two months, was 74.3% (84 0f 113) (p -0.000). Similarly, the cure rate for the patients who converted at three months was 84% (68 of 81) and for those who did not convert at three months was 55.2% (16 of 29) (p-0.01). Interpretation: Patients with higher grades of sputum positivity at the beginning of the treatment have significantly lower SCR at the end of intensive phase and even after extending the intensive phase for one month. Hence, they are likely to remain infectious for a longer duration and continue to transmit infection in the community. Therefore, these patients demand to have more stringent self-precautionary measures to break the chain of infection in the community. The SCR at two months and three months as an operational indicator should be given more importance rather than being practised only as a documentation and academic exercise. The patient should be investigated for the possible co-morbid conditions and drug resistance which could be a cause for the persistent sputum smear positivity at two and three months and hence poor treatment outcome.

Introducing regular behavioural surveillance into the health system in India: Its feasibility and validity.

Background. Illness is affected by human behaviour. However, in most developing countries the risk behaviour of the general population is not assessed. We developed a surveillance system to assess the ‘risk factors’ at the community level using the routine healthcare system. Methods. The Comprehensive Rural Health Services Project at Ballabgarh, Haryana, provides healthcare to a population of 82 933 through 2 primary health centres and 24 health workers. Information on behavioural risk factors for communicable and non-communicable diseases was collected by health workers during the annual health census from December 2003 to February 2004. The information collected pertained to maternal and child health, and household and individual behaviour. We compared the data related to individual behaviour with that of a survey of non-communicable diseases risk factors done in the same area. Results. Data were collected from (i) mothers who had delivered during the preceding year (n=1625), (ii) a random sample of individuals (n=2865), (iii) and all households (n=7488). The response rate was 85% for mothers, 91% for households and 95% for individuals. Approximately 80% of the households had access to drinking water, 32% to sanitary latrines, 28% of women increased their dietary intake during pregnancy, and 50% of adult men used tobacco. Comparing these results with those from the survey of risk factors for non-communicable diseases revealed no significant differences. Conclusion. It is feasible for health workers to do behavioural surveillance by using the routine healthcare system.

Prevalence of risk factors for non-communicable disease in a rural area of Faridabad district of Haryana.

BACKGROUND & OBJECTIVES: To estimate the prevalence and levels of common risk factors for noncommunicable disease in a rural population of Haryana. METHODS: The study involved a survey of 1359 male and 1469 female respondents, aged 15-64 years. Multistage sampling was used for recruitment (PHCs/sub-centres/villages). All households in the selected villages were covered, with one male and one female interviewed in alternate household. WHO STEP-wise tool was used as the study instrument which included behavioural risk factor questionnaire and physical measurements of height, weight, waist circumference and blood pressure. The age adjusting was done using rural Faridabad data from Census 2001. RESULTS: The age adjusted prevalence of daily smoked tobacco was 41% for men and 13% for women. Daily smokeless tobacco use was 7.1% and 1.2% for men and women respectively. The prevalence of current alcohol consumption was 24.6% among men and none of the women reported consuming alcohol. The mean number of servings of fruits and vegetables per day was 3.7 for men and 2.7 for women. The percentage of people undertaking at least 150 minutes of physical activity in a week was 77.8% for men and 54.5% for women. Among men 9.0% had BMI > or = 25.0 compared to 15.2% among women. The prevalence of measured hypertension, i.e. > or = 140 SBP and/or > or = 90 DBP or on antihypertensive drugs was 10.7% among men and 7.9% among women. CONCLUSION: The study showed a high burden of tobacco use and alcohol use among men, inactivity and overweight among women and low fruit and vegetable consumption among both sexes in rural areas.

Risk factors for non-communicable disease in urban Haryana: a study using the STEPS approach.

BACKGROUND: India is in the midst of an epidemiological transition with non-communicable diseases increasing in importance. Targeting the risk factors for non-communicable diseases is recognized as an essential preventive strategy. There is lack of good quality data on prevalence of risk factors. The present study addresses this challenge in urban population of Ballabgarh town in Faridabad district of Haryana. METHODS: A total of 1263 male and 1326 female respondents were selected using multistage systematic random sampling, in 5 age groups of 10 years (15-24, 25-34, 35-44, 45-54 and 55-64). The World Health Organization's STEPS approach entails stepwise collection of the risk factor data based on standardized questionnaires (step 1), basic physical measures in step 2 and finally in 3rd step, basic biochemical investigations such as blood sugar and cholesterol. The prevalence was adjusted to the age and sex strata of urban Faridabad as per census 2001. RESULTS: The prevalence of current daily use of smoked tobacco was 22.2% (95% CI7colon; 20.0-24.6) for males and 1.4% (95% CI: 0.9-2.2) for females. In males the prevalence of current alcohol consumption was 28.9% (95% CI: 26.4-31.5). Physical inactivity was reported by 23.2% (95% CI: 20.9-25.6) of males and 52.4% (95% CI: 49.7-55.1) of female respondents. Only 8.6% of males and 4.4% of females were consuming adequate portions of the fruits and vegetables. 23.1% (95% CI: 20.8-25.5) males and 15.7% (95% CI: 13.87ndash;17.8) females were either in Stage 1 and 2 hypertension (JNC VII) or were taking anti-hypertensives. Among males, 25.4% (95% CI: 23.0-27.9) and, among females 34.9% (95% CI: 32.3-37.6) were overweight. CONCLUSION: The prevalence of tobacco and alcohol use among males and physical inactivity among females was high. Low consumption of fruits and vegetables, hypertension and overweight was equally common among both the sexes in the population studied. Thus there is an urgent need for initiating measures at the risk factor level to counter this modern day epidemic of non-communicable disorders, within this urban community.

Are the urban poor vulnerable to non-communicable diseases? A survey of risk factors for non-communicable diseases in urban slums of Faridabad.

BACKGROUND: Non-communicable diseases have modifiable risk factors, which are easy to measure and can help in planning effective interventions. We established a community-based sentinel surveillance to estimate the prevalence and level of common risk factors for major non-communicable diseases as part of a joint Indian Council of Medical Research/WHO initiative. METHODS: This survey was done from February 2003 to June 2004 and included 1260 men and 1 304 women 15-64 years of age living in urban slum areas of Ballabgarh block, Faridabad district, Haryana. A list of all slums in Ballabgarh block was obtained from the Municipal Corporation of Faridabad. Slums were selected by stratified cluster sampling. All households in the selected slums were visited and men and women interviewed in alternate households. The study instrument was based on the STEPS approach of WHO. It included questions related to tobacco use, alcohol intake, diet, physical activity, and history of treatment for hypertension and diabetes mellitus. Height, weight, waist circumference and blood pressure were measured. To estimate prevalence at the population level, age adjustment was done using the urban Faridabad population structure from the 2001 Census of India. RESULTS: The age-adjusted prevalence of smoking among men was 36.5% compared with 7% in women. Bidi was the predominant form of smoked tobacco used. The use of smokeless tobacco was reported by 10.2% of men and 2.9% of women. While 26% of men reported consuming alcohol in the past 1 year, none of the women did. The mean number of servings per day of fruits and vegetables was 2.7 for men compared with 2.2 for women. Overall, only 7.9% and 5.4% of men and women, respectively took > or = 5 servings per day of fruits and vegetables. Women were more likely to be physically inactive compared with men (14.8% v. 55%); 67% of men and 22.8% of women reported mean physical activity > 150 minutes per week. The mean body mass index (BMI) was lower in men than in women (20.9 v. 21.9 kg/m2). The prevalence of overweight (BMI > or = 25 kg/m2)) was 16% among men and 21.9% among women. The prevalence of hypertension (blood pressure > or = 1 40/> or = 90 mmHg or on an antihypertensive drug) was 17.2% in men and 15.8% in women. CONCLUSION: The high prevalence of risk factors for noncommunicable diseases across all age groups in this urban slum community indicates the likelihood of a high future burden of illness. Immediate action for prevention and control is required to prevent the situation from worsening.

Declining sex ratio: role of society, technology and government regulation in Faridabad district, Haryana.

BACKGROUND: A declining sex ratio at birth has been documented during censuses in India. The decline is especially more in the northern states of Haryana and Punjab. We attempted to assess the role of society (preference for a male child, awareness and acceptability of the practice of sex determination), technology (availability and affordability) and government regulation in the adverse ratio for girls in the Ballabgarh block of Haryana in northern India. METHODS: The population (about 80 000) in the Ballabgarh block has been under constant demographic surveillance for the past 30 years and the data are stored electronically. This was used to determine the sex ratio at birth in the area since 1990. The data on availability of ultrasound machines was collected from the district authorities, as registration of these machines was made mandatory under the Prenatal Diagnostic Techniques Act, 1994. We interviewed 160 mothers and grandmothers to determine the awareness and acceptability of sex determination methods and practices. RESULTS: The demographic data for the past 10 years showed a declining sex ratio-from 881 in 1990-91 to 833 in 2000-01. The data support the view that in the initial part of this period, ultrasound was used for sex determination of all-order births but subsequently was used more in higher-order births. Our interviews with the mothers and grandmothers of the area showed that the practice of sex determination is prevalent and the attitude of the society is ambivalent. The increased availability of ultrasound machines in the area in the past 10 years corresponded to the decline in sex ratio. When the government made the practice illegal, the sex ratio improved only to fall again as the law was not implemented. Later years saw a more stringent implementation of the law and the sex ratio improved again. CONCLUSION: There is a 'demand' for sex determination technology and, therefore, this would continue to be 'supplied'. At most the 'supply' can be regulated. Social engineering efforts need to be targeted at reducing the demand if the sex ratio is to be improved.

Cost of syrup versus capsule form of vitamin A supplementation.

The study was done to estimate the cost of each dose of vitamin A (2,00,000 Units) to the health system when delivered as a capsule, applicap or as syrup form. The cost of distribution of vitamin A supplements was estimated for the manufacturers, district and delivery level. The lowest cost per dose was for capsules in plastic jar (Rs. 0.99) and the highest was for the syrup in glass bottle (Rs. 1.29), the option currently being practiced. The distribution costs were least for the capsule, which compensates for its higher production cost. The cost of syrup was also more due to high degree of wastage compared to capsules. While cost is an important issue, other operational factors need also to be considered.

Use of verbal autopsy by health workers in under-five children.

We conducted this study to ascertain whether health workers can routinely administer verbal autopsy (VA) to determine the cause of death in their area. The health workers were trained to administer verbal autopsy tool on the deaths occurring in the population under them. All the verbal autopsies of under-five deaths between January 2000 to December 2001 were reviewed by a pediatrician. There were 262 deaths of children under five years in this period, and 71% of them were infants, out of which 34% were neonatal deaths. The health workers reported PEM, fever, pneumonia, and diarrhea as the leading causes of death, based on the existing system of obtaining information provided by the family members. Verbal autopsy forms reviewed by a pediatrician also showed that apart from fever, the first three causes of death were the same i.e., PEM, diarrhea and pneumonia. This study shows that health workers can be trained to use the verbal autopsy to ascertain the cause of death.

Seroprevalence of toxoplasma infection among primigravid women attending antenatal clinic at a secondary level hospital in North India.

A study was carried out among primigravid women attending a secondary level hospital in a district of North India. The objective of the study was to determine seroprevalence rate of Toxoplasma gondii infection using enzyme-linked immunosorbent assay (ELISA) test. Associations between toxoplasma seropositivity and selected variables (socio-demographic and biologically plausible variables) were also studied. Five hundred three women were enrolled from the antenatal clinic between August, 1996 and September, 1997. Of these, 210 women (41.75%) were seropositive for Toxoplasma gondii infection. These results indicate that a large number of the study subjects were vulnerable to toxoplasma infection. If these infections had occurred during the pregnancy, their foetuses would have been at high risk of infection. There was no statistically significant association between toxoplasma seropositivity and the variables studied except, in the case of type of meat usually consumed. There is a need to provide health education to pregnant women in order to prevent primary toxoplasma infection during pregnancy.

Out-of-pocket expenditure on healthcare in a north Indian village.

BACKGROUND: Information on healthcare expenditure at the family or household level is important for the planning and management of health services. It is particularly relevant for health insurance agencies to estimate the amount of premium for initiating a universal health insurance system. METHODS: Of 800 families in a village, 160 were selected by systematic random sampling. Of these, 156 families were followed up for a period of 12 months (September 1998 to August 1999) by making monthly visits. Responses from each family, as given by the head of the family, were recorded with the help of an interview schedule administered in the local language. The interview schedule covered any morbidity among the family members in the past one month and the out-of-pocket expenditure incurred on the same. RESULTS: The private health sector was utilized in 59.4% of total episodes. Utilization of the private sector was directly associated with a higher socioeconomic status (p = 0.002). Of the total expenditure on non-hospitalized cases, 83.6% was incurred in the private sector. The mean per capita annual out-of-pocket expenditure on health was Rs 131. The median expenditure per episode was Rs 15. CONCLUSION: Our study shows that out-of-pocket expenditure is more than the government expenditure on health. There is a need for systems such as health insurance to protect the poor from high medical costs.

Passive malaria surveillance in a low endemic area of India: validation of a clinical case definition.

BACKGROUND: In India, 2.55 million cases of malaria were reported during 1997; roughly one-third were due to Plasmodium falciparum. Malaria cases are identified by passive and active surveillance and all patients with fever are treated with chloroquine (10 mg/kg body weight). Since all fevers are not malaria, this results in overtreatment and has a bearing in terms of the parasites developing resistance. We aimed to test the validity of a clinical algorithm for passive malaria surveillance by primary care doctors (fever with pallor or splenomegaly) in a low endemic, Plasmodium vivax-predominant area of Ballabgarh block in Faridabad District, Haryana. METHODS: Passive surveillance was carried out at the general and paediatric outpatient departments (OPDs) of Ballabgarh hospital. All persons with fever attending the OPD were examined for the presence of fever, pallor and splenomegaly by the treating doctor. A blood smear was prepared and examined in all these cases. RESULTS: A total of 3119 slides for malaria were made at Ballabgarh hospital but clinical details in the requisition form were available for only 2616 patients who form the subjects of this analysis. A total of 59 malaria cases (30 P. vivax cases and 29 P. falciparum) were diagnosed. The presence of fever with pallor or splenomegaly had a sensitivity of 28.8% (95% CI: 18.1-42.3); specificity of 88.6% (95% CI: 87.3-89.8), positive predictive value of 5.5% (95% CI: 3.3-8.8) and negative predictive value of 98.2% (95% CI: 97.5-98.7). CONCLUSION: The algorithm did not have sufficient sensitivity to detect malaria cases by passive surveillance.

Consensus and conflicts in health sector reforms in India: a Delphi study.

BACKGROUND: Health sector reforms have generated much debate in India, especially in the context of economic liberalization. The World Bank intensified this debate in 1993 when it tried to redefine the role of the public and private sectors in healthcare. The Government of India has recently announced the National Health Policy. We are not aware of any formal exercise by which a consensus has been reached or conflicts in the issues related to health policy have been assessed. We present the results of such an exercise conducted in the format of a Delphi study. METHODS: Based on a review of the current literature, a 9-domain, 56-item questionnaire was prepared. This was sent to a panel of 132 respondents with diverse backgrounds, from the grassroots workers to policymakers by surface or electronic mall. They were asked to identify the three top priorities and to give their degree of agreement to the statements. The results of the first round were analysed and sent back to the respondents for reconsideration. Consensus was defined as the presence of > or = 75% of the respondents in agreement whereas conflict was said to be present if > 35% of the respondents were on either side of the divide. During the subsequent round, the respondents were also asked to give three suggestions on how to approach the previously identified top three priorities. RESULTS: Half (66) of the original list of panelists replied to the questionnaire. The three priorities identified and later ratified were: improving the quality of care of the primary healthcare system, improvements in medical education and setting up a disease surveillance system. Other areas of consensus identified were: setting up a formal channel of interaction with the private health sector, instituting cost recovery systems in the government sector, setting up a technology assessment commission and bringing accountability into the system. Conflicts were in continuation of subsidy in medical education, the role of and need for health insurance and the role of health professionals vis-a-vis Panchayati Raj institutions. CONCLUSION: We have demonstrated, on a small scale, the feasibility of assessing consensus on a wide range of issues. The approach is replicable, cost-effective and ensures that the scope of involvement is widened. Also, there is likely to be a greater feeling of self-involvement in the decisions made which would therefore meet with less resistance from the system during implementation.

Ethical issues in public health policy.

Ethics in public health policy is given the least importance and rarely discussed. Resolving ethical issues in public health is often an arduous task as these are complicated and require careful handling. Using four case studies, we discuss issues pertaining to pertussis and brain damage, water fluoridation and dental caries, infection with the human immunodeficiency virus and the right to marriage, and the debate surrounding universal salt iodization. The core issue in all these examples pertains to the relevance of ethics in public health policy.

Injection use in a village in north India.

BACKGROUND: Injections can transmit infections such as human immunodeficiency virus (HIV), hepatitis B virus (HBV) and hepatitis C virus (HCV), and precipitate poliomyelitis. Complications such as injection abscesses and nerve damage may also occur. It is estimated that 50% of the injections given in developing countries are unsafe. However, limited information is available from India. We planned a pilot study to assess the prevalence of injection use and the knowledge of the community and private medical practitioners (PMPs) about injection use. METHODS: One in every four houses in the village under study was selected by systematic random sampling. One adult (> 18 years) respondent in the family was asked questions about family members receiving injections in the past 6 months. Nine PMPs were interviewed about their knowledge and practices regarding injection use. RESULTS: In the past six months, 1280 family members in 285 houses received 1575 injections (2.46 injections per person per year). About 35% had received at least one injection in the past 6 months. Children below 5 years received 3.1 injections/child/year of which about 60% were preventive. On their last visit to a health facility, 55% of the subjects were given injections using disposable syringes. About 45% of the 285 respondents knew that diseases could be spread by improper use of injections. While 18% of the respondents said they would prefer injections, 54% preferred oral medications if both were equally effective. After being told the average cost of disposable needles and syringes, 92% of the respondents were willing to buy them. None of the 9 PMPs practising in the village were formally trained in modern medicine. On the day of observation, 18 of 58 patients (30%) seen by PMPs were given injections. Three injections were observed and though they were all given with disposable syringes, the technique of administration did not follow standard guidelines in any. Two PMPs did not know of any disease transmitted by injections. The syringes were usually thrown in a nearby drain or outside the village. Four PMPs said that patients themselves did not ask for injections. CONCLUSION: The use of injections in the study area was high. The PMPs were not only giving a high number of injections but the technique of administration was also wrong. The community was less likely to ask for injections on their own but was willing to buy disposable syringes and needles. The awareness about the risk of injections was low.

Sero-epidemiology of hepatitis E virus (HEV) in urban and rural children of North India.

OBJECTIVE: To estimate the prevalence of anti-HEV IgG and IgM antibodies to ORF3 peptide of Hepatitis E virus genome in an age stratified urban and rural population of children. DESIGN: Cross sectional survey. SETTING: Pediatric out-patient clinics in a tertiary hospital and a rural dispensary. METHODS: Study subjects between 6 months and 10 years with minor, non-hepatic illnesses were recruited for the study from March to December 1996. Baseline demographic details, drinking water source, sewage disposal methods, reasons for attending the hospital, histories of parenteral exposure in the past 12 months and acute hepatitis in the subjects and the family in the previous six months were obtained. Serum anti-HEV IgG antibodies were screened in all subjects, and in those who were positive, anti-HEV IgM antibodies were assayed as an indicator of recent infection. Serum aminotransferase (ALT) was estimated in those who were anti-HEV IgM antibody positive. RESULT: Out of 2160 subjects recruited, 2070 samples could be screened for anti-HEV IgG antibodies. In the urban population (n = 1065) anti-HEV IgG antibodies were detected in 306 subjects (28.7%; 95% CI 26.0-31.6) and of these 131 (42.8%; 95%CI 37.2-48.6) were anti-HEV IgM antibody positive. Amongst 1005 rural children, anti-HEV IgG antibodies were present in 239 (23.8%; 95% CI 21.1-26.4) and IgM antibodies in 113 (47.3%; 95% CI 40.9-53.7) children. The antibodies were present since the first year of age till 10 years of age and, increased with advancing age. Serum transaminases were raised in 7.5% (9/120) and 5.5% (5/88) of subjects with anti-HEV IgM antibodies in urban and rural centers respectively. Overall the seroprevalence of IgG antibodies against HEV were significantly more in urban as compared to that in rural subjects (p = 0.011). However, proportion of children with anti-HEV IgG carrying IgM antibodies was similar in the two study groups (p = 0.298). A model for estimating expected prevalence of anti-HEV IgG antibodies was developed. The observed antibody prevalence in both urban and rural subjects at each age interval after 48 months was less as compared to the expected levels and this gap increased with advancing age categories. It appeared that there was a decay of HEV antibodies with time. CONCLUSIONS: Children are susceptible to HEV infection since early infancy. The probability of exposure to HEV during childhood was higher in urban than rural population. Seropositivity to HEV antibodies increased by over 2 times beyond 4 years of age as compared to younger age. Anti-HEV IgG antibodies appear to wean off with increasing age.