An Accelerated Failure Time Model to Predict Cause-Specific Survival and Prognostic Factors of Lung and Bronchus Cancer Patients with at Least Bone or Brain Metastases: Development and Internal Validation Using a SEER-Based Study.

BACKGROUND: This study addresses the significant challenge of low survival rates in patients with cause-specific lung cancer accompanied by bone or brain metastases. Recognizing the critical need for an effective predictive model, the research aims to establish survival prediction models using both parametric and non-parametric approaches. METHODS: Clinical data from lung cancer patients with at least one bone or brain metastasis between 2000 and 2020 from the SEER database were utilized. Four models were constructed: Cox proportional hazard, Weibull accelerated failure time (AFT), log-normal AFT, and Zografos-Balakrishnan log-normal (ZBLN). Independent prognostic factors for cause-specific survival were identified, and model fit was evaluated using Akaike's and Bayesian information criteria. Internal validation assessed predictive accuracy and discriminability through the Harriel Concordance Index (C-index) and calibration plots. RESULTS: A total of 20,412 patients were included, with 14,290 (70%) as the training cohort and 6122 (30%) validation. Independent prognostic factors selected for the study were age, race, sex, primary tumor site, disease grade, total malignant tumor in situ, metastases, treatment modality, and histology. Among the accelerated failure time (AFT) models considered, the ZBLN distribution exhibited the most robust model fit for the 3- and 5-year survival, as evidenced by the lowest values of Akaike's information criterion of 6322 and 79,396, and the Bayesian information criterion of 63,495 and 79,396, respectively. This outperformed other AFT and Cox models (AIC = [156,891, 211,125]; BIC = [158,848, 211,287]). Regarding predictive accuracy, the ZBLN AFT model achieved the highest concordance C-index (0.682, 0.667), a better performance than the Cox model (0.669, 0.643). The calibration curves of the ZBLN AFT model demonstrated a high degree of concordance between actual and predicted values. All variables considered in this study demonstrated significance at the 0.05 level for the ZBLN AFT model. However, differences emerged in the significant variations in survival times between subgroups. The study revealed that patients with only bone metastases have a higher chance of survival compared to only brain and those with bone and brain metastases. CONCLUSIONS: The study highlights the underutilized but accurate nature of the accelerated failure time model in predicting lung cancer survival and identifying prognostic factors. These findings have implications for individualized clinical decisions, indicating the potential for screening and professional care of lung cancer patients with at least one bone or brain metastasis in the future.

Safety perception and determinants of complementary and alternative medicine usage among surgery out-patients in LAUTECH Teaching hospital, ogbomoso, Nigeria.

Objectives: The use of complementary and alternative medicine (CAM) stemmed from the search of humans for other means of relieving pain and managing diseases which has plagued its existence. CAM use is on the increase among the general population in both the developed and developing nations and also among surgical patients. There is therefore a need to ascertain the perceived adverse effects, the safety perception and the determinants of its use so as to improve the advocacy for adequate regulation. Methods: It was a cross-sectional study carried out among surgical outpatients in a tertiary hospital. One hundred and fifty patients between the ages of 18 and 85 years were recruited. An interviewer-administered questionnaire was used to collect data from each participant. Data was analyzed using SPSS version 22. Results: The lifetime prevalence of CAM use among the respondents was 76 % while the point/current prevalence was 37.3 %. The percentage of current users using CAM for surgical complaints was 30.4 %. Biological based therapy accounted for 110 (72 %) of CAM used and unbranded herbal products was responsible for more than two-third of it. Almost a third of the patients (46, 30.7 %) perceived that CAM is safe while 62 (41.3 %) were not sure of its safety. Only 15 (13.2 %) and 6 (5.3 %) have ever recorded side effects and drug interactions respectively. Older age group, income less than 10,000 Naira, positive safety perception and belief about CAM were identified as determinants of CAM usage. Conclusions: The prevalence of CAM usage among surgical outpatients was quite high and the major determinants of its use are the patient's age, safety perception and their level of income.

International health regulations and pre-travel health practices of international travelers at Nigerian airport: a cross-sectional study.

BACKGROUND: International Health Regulations (IHR) were developed by the World Health Organization (WHO) to curb the trans-border spread of epidemics. To our knowledge, no airport-based studies have assessed travelers' health practices against a combination of diseases subject to IHR 2005. Therefore, we aimed to generate and describe the baseline travelers' pre-travel health practices towards Cholera, Yellow Fever (YF), and Plague at Murtala Muhammed International Airport (MMIA) in Nigeria. METHODS: A cross-sectional study was employed to collect data from 486 international travelers using a multistage sampling technique. Pre-travel health practices (a combination of pre-travel consultation, pre-travel vaccination, and preventive measures against insect bites) were assessed using an interviewer-administered questionnaire. Logistic regression models were used to estimates the association between selected variables and pre-travel health practices. Statistical significance level was set at 5%. RESULTS: A total of 479 complete questionnaires were analyzed. The median age of respondents was 34.0 years Interquartile range (IQR) = 28.0, 44.0). Of the total respondents, 311 (64.3%) were aware of pre-travel health consultation and sources of information, amongst others, including friends/relatives in 180 (37.6%) travelers, social media/internet in 155 (32.4%) travelers, and health professionals in 102 (21.3%) travelers. Two hundred and seventy-one (56.6%) had pre-travel consultation, 156 (32.6%) had YF vaccination, and 226 (47.2%) were prepared to use preventive measures against insect bites. Only 10.6% had good pre-travel practices against the diseases subject to 2 International Health Regulations (IHR). Travelers with bachelor/college degrees, when compared to those with secondary/high education, had 2.91 times higher odds of having good practices when adjusting for other factors (95% C.I: 1.10, 7.70; p < 0.03). Also, those traveling to destinations endemic for YF infection, when compared to those who are not traveling to endemic countries/areas, had 48% lower odds of having good practices after adjusting for other factors (95% C.I: 1.41, 7.77; p < 0.01). CONCLUSIONS: Our study revealed a low prevalence of good pre-travel health practices among participants. Educational level and endemicity of YF at the destination were predictors of pre-travel health practices. Introducing topics on travelers' health into schools' curriculums may have a ripple positive effect on health practices among international travelers. Also, there is a need for public enlightenment programs on pre-travel health practices using social media platforms.

Community perception and acceptability of COVID-19 vaccine in South-West Nigeria: an online cross-sectional study.

Background: The development of COVID-19 vaccines holds great potential for controlling the spread of SARS-CoV-2. Vaccines, irrespective of the disease are generally fraught with hesitancy, and Nigeria has a history of vaccine hesitancy. Objective: This study aimed at determining the perception of community members about the COVID-19 vaccine and their readiness to accept the vaccine in South West, Nigeria. Methods: A descriptive cross-sectional study design was employed to collect data from consenting adults using a structured online questionnaire for a period of three weeks. Data were subjected to a Chi-square test and logistic regression for bivariate and multivariate analysis, respectively. Results: A total of 807 respondents participated in the survey with 57.7% males and 42.3% females. Forty-five respondents (5.6%) had previously been diagnosed with COVID-19 while 11.5% of the respondents had co-morbidity. The overall perception of COVID-19 vaccines was good. Fifty-nine (59%) percent of the respondents were willing to accept the vaccine and will also encourage their family members to take the vaccine. Vaccine origin and cost were determinants of vaccine acceptability. Nonacceptability of the vaccine (61.6%) was based on possible adverse effects of the vaccine and mistrust of the government. Educational level, skill status, type of employment, and sector of employment were associated (P<0.001) with the acceptability of the COVID-19 vaccine. Conclusions: Citizens were willing to take COVID-19 vaccines, however, a lack of trust in government programs might undermine the vaccine campaign. Hence, the government needs to rebuild trust with the citizens towards achieving a high vaccination rate for COVID-19.

Is Intimate Partner Violence More Common Among HIV-Positive Pregnant Women? A Comparative Study in Oyo State, Nigeria.

Introduction: Intimate partner violence (IPV) is the most common form of violence against women. Pregnant women are also not exempted from the menace of IPV which has dire consequences for both the mother and child. There is an established link between HIV and IPV and both have a synergistic effect. This study is aimed at comparing the prevalence, pattern, and determinants of IPV among pregnant women living with HIV and HIV-negative pregnant women attending antenatal clinics in Oyo state. Methodology: This is a descriptive cross-sectional study carried out among women attending antenatal clinics in Oyo state using a multistage sampling technique. The study spanned through March and September 2019. The data collection was conducted using a semi-structured questionnaire and the analysis was done using Statistical Package for Social Sciences version 22. The pattern and prevalence of IPV were measured using the Composite Abuse Scale, a 30-item validated interviewer-administered research instrument. It measured 4 dimensions of abuse: physical, emotional, severe, combined, and sexual harassment. A preliminary cut-off score of 7 was used to divide respondents into the presence or absence of IPV. A Chi-square test was used to test for an association between IPV and socio-demographic characteristics and a logistic regression was used at the multivariate level to identify the determinants of IPV. The P-value was set at <.05. Results: Out of the 240 booked pregnant women, 44.2% of HIV-negative respondents and 47.5% of women living with HIV reported being abused in the index pregnancy. Severe combined abuse was the most common type of abuse, 110 (75.1%), followed by emotional abuse, 70 (40.2%), physical abuse, 68 (39.3%), and sexual harassment, 67 (38.1%). Respondents living with HIV reported suffering more physical abuse than their HIV-negative counterparts. Occupation of respondents and duration of marriage determinants of IPV among HIV-positive participants are statistically significant while the duration of marriage was not statistically significant for IPV among HIV-negative respondents. Conclusion: This study recorded a high prevalence of IPV among pregnant women living with HIV and HIV-negative pregnant women with a slight increase in the group living with HIV. It is therefore recommended that IPV screening programs and intervention strategies should be developed for every pregnant woman, irrespective of their HIV status.

Expectations and experiences of urban and rural in-school adolescents of adolescent reproductive health services in oyo state, Nigeria.

Reproductive health information and services are fundamental to health, well-being and opportunities for women and young people, yet throughout the world, women and youths do not have access to quality reproductive health care thereby exposing them to unplanned pregnancy, teen birth, induced abortion as well as increased exposure to sexually transmitted diseases, HIV inclusive. This study is meant to explore the expectation of adolescents of an adolescent reproductive health services as well as to assess the experiences of those who had visited an ARHS at the centers. It was a descriptive cross-sectional prospective study, analytic in design using a multistage sampling technique where 452 secondary school pupils in both rural and urban communities were interviewed using a pretested validated questionnaire. Data was analyzed using SPSS version 21. Chi square was used to test for association between both rural and urban adolescents in issues relating to their expectation and experiences, with P-value of #x003C;0.05. More of the respondents in the urban communities (73,32.4%) have the expectation that Adolescent Reproductive Health Services (ARHS) should be provided in an existing health service with special attention to adolescents while a larger percentage of those who preferred a special adolescent health institution were from the rural communities (122, 54.2%) which was statistically significant with a P-value of 0.001. More of respondents from the rural communities also expect that contraception services should be provided in an ARHS center while life skill services are expected by more of the respondents from the urban communities (122, 55.6%). More of the rural community respondents (57,25.3%) expect that fee at the ARHS centers should be provided at a subsidized rate while more of the urban dwellers have the expectation that services provided should be free of charge. For respondents who had been to an ARHS center, more of the urban respondents were attended to by a Medical doctor and a large percentage (34, 94.4%) of those who had visited ARHS center before professed to be satisfied with the services rendered there. Expectations from adolescents from ARHS are very high. However, most of them prefer a free of charge service as well as a service area nearer to residential area. Confidentiality and having a young health professional at the service centers cannot be overemphasized in the provision of quality ARHS.

Expectations and experiences of urban and rural in-school adolescents of adolescent reproductive health services in Oyo State.

Reproductive health information and services are fundamental to health, well-being and opportunities for women and young people, yet throughout the world, women and youths do not have access to quality reproductive health care thereby exposing them to unplanned pregnancy, teen birth, induced abortion as well as increased exposure to sexually transmitted diseases, HIV inclusive. This study is meant to explore the expectation of adolescents of an adolescent reproductive health services as well as to assess the experiences of those who had visited an ARHS at the centers. It was a descriptive cross-sectional prospective study, analytic in design using a multistage sampling technique where 452 secondary school pupils in both rural and urban communities were interviewed using a pretested validated questionnaire. Data was analyzed using SPSS version 21. Chi square was used to test for association between both rural and urban adolescents in issues relating to their expectation and experiences, with P-value of <0.05. More of the respondents in the urban communities (73,32.4%) have the expectation that Adolescent Reproductive Health Services (ARHS) should be provided in an existing health service with special attention to adolescents while a larger percentage of those who preferred a special adolescent health institution were from the rural communities (122, 54.2%) which was statistically significant with a P-value of 0.001. More of respondents from the rural communities also expect that contraception services should be provided in an ARHS center while life skill services are expected by more of the respondents from the urban communities (122, 55.6%). More of the rural community respondents (57,25.3%) expect that fee at the ARHS centers should be provided at a subsidized rate while more of the urban dwellers have the expectation that services provided should be free of charge. For respondents who had been to an ARHS center, more of the urban respondents were attended to by a Medical doctor and a large percentage (34, 94.4%) of those who had visited ARHS center before professed to be satisfied with the services rendered there. Expectations from adolescents from ARHS are very high. However, most of them prefer a free of charge service as well as a service area nearer to residential area. Confidentiality and having a young health professional at the service centers cannot be overemphasized in the provision of quality ARHS.

Pilot study of new statistical models for prognostic factors in short term survival of oral cancer.

Background: Survival times of oral cancer are poorly documented in Nigeria. This is partly due to poor documentation and limited investigations to elicit sufficient prognostic factors. In this study, we applied a new statistical model for survival times of oral cancer patients considering limited prognostic factors. Methods: A total of 29 cases of Oral cancer patients with stage I to IV invasive primary oral cancer treated at the University of Port Harcourt, Nigeria between 2008 and 2015 were used to generate prognostic models. Profiled prognostic factors include age, stage of tumor development, habitus, and treatment modalities. The baseline statistical distributions considered were Exponential, Weibull, Lognormal and Log-logistic distributions. The Chi-Square test was considered for the suitability of the model chosen. A comparison of the model performance was done using the Akaike Information Criterion (AIC). Results: Seventeen (58.6%) of the oral cancer patients were males and 12(41.4%) were females within the age range of 19 and 73 years. Sixteen (55.2%) of the patients were censored while 13(44.8%) were not censored. The estimated median survival time (MST) for the males was 29.50 months while that of the female was 7 months. Four parametric statistical models were tested and all identified tumor stage [cTNM stage (p= 0.000)] and treatment modality (p= 0.000) as more important predictors of survival. The models were then compared, using the Akaike Information Criterion (AIC) to determine the model best fit for the data. The model with the lowest AIC and so considered the best was the Weibull Statistical Model (WSM) with AIC= 100.76. Conclusions: This study suggests that the Weibull survival model is the best fit for estimating oral cancer survival times especially where only limited prognostic factors are available. Larger studies are required to validate the findings of this pilot.

Caregivers' perception and determinants of delayed presentation of children with severe malaria in an emergency room in Benin City, Nigeria.

Introduction: Severe malaria is a leading cause of mortality due to late presentation to health facilities. Hence, there is a need to identify and mitigate factors promoting delayed presentation with severe malaria. Objective: This study aimed to evaluate determinants of delayed presentation of children with severe malaria in a tertiary referral hospital. Methods: This study adopted a descriptive, cross-sectional design. The participants were children with a diagnosis of severe malaria, based on WHO diagnostic criteria. Delayed presentation was defined as presentation at the referral centre at >3 days of illness. Inferential analyses were done to identify factors associated with delayed presentation. P < 0.05 was considered statistically significant. Results: A total of 126 children with severe malaria participated in the study; their mean (standard deviation) age was 4.2 (5.3) years. The prevalence of delayed presentation in this study is 37.3%. Socio-economic class (P = 0.003); marital status (P = 0.015) and the number of health facilities visited before admission in the referral centre (P = 0.008) were significantly associated with delayed presentation. Children from upper socio-economic class were thrice more likely to present late, compared to those from lower social class (odds ratio [OR] = 3.728, 95% confidence interval [CI]: 1.694-8.208; P = 0.001). Likewise, the Yorubas were more delayed than the Binis (OR = 0.408, 95% CI: 0.180-0.928; P = 0.033). There was a negative correlation between caregivers' perception of treatment (r = -0.113, P = 0.21) of convulsion in severe malaria and timing of presentation. Conclusions: Delayed presentation is common with multifactorial determinants in the setting. Health education of caregivers on the consequences of delayed presentation in severe malaria is desirable.

Efficacy Of Microporous Tape In The Prevention Of Abnormal Post-Surgical Scars Among A Black Population.

BACKGROUND: A scar can be defined as a mark or a blemish resulting from a healed wound. All surgical incisions give rise to scars and approximately 15% have excessive scars. Some scars are thin lines which are almost unnoticeable, whereas others become abnormal when the amount of fibrosis is excessive or suboptimal or when it causes functional disability or aesthetic distress to the patient. The conversion of normal scarring to hypertrophic scarring occurs six to eight weeks after surgery as a result of increasing scar tension. Thus, scar support especially with the use of microporous tape is critical during this period. Objectives were to determine the efficacy of microporous tape in the prevention of abnormal post-surgical scars. METHODS: A randomized control study which compared the limb scar outcome between post-surgical patients who underwent scar taping with microporous tape and those who did not. The scars were assessed at six weeks, three months and six months after surgery using the Patient and Observer Scar Assessment Scale. The test group had microporous tape applied to their scars over a period of six months and worn twenty-four hours daily. The tapes were changed every fortnight or whenever they fell off. The data was analyzed using SPSS-22. The categorical variables, the relative scar height, the scar width and the OSAS score were compared using the Chi-square test and the independent t-test respectively. RESULTS: At six weeks, 48.8% of non-taped scars and 97.6% of taped scars were normal; at three months 75.6% of non-taped scars and 2.4% of taped scars were abnormal while at 6 months 80.5% of non-taped scars and none of the taped scars were abnormal. CONCLUSIONS: Microporous tape is an effective modality for preventing abnormal scarring in postsurgical patients.

Street youths: reproductive health risk status, reproductive health challenges and barriers to health services utilization in a southwestern City, Nigeria.

Background Information: According to the United Nations, about 150 million youth spent most of their time on the street, or better still, homeless. This is becoming a global phenomenon and majority of this vulnerable people live in large cities and urban areas of developing countries. Street youths are among the high risk, insecure and vulnerable groups who are often exposedto various forms of abuses and diseases, including reproductive health issues. Methodology: A descriptive cross sectional study carried out among street youths in Ikorodu Local Government, Lagos State using a multi staged sampling technique. Frequency tables were drawn at the univariate level, chi squared was used to test for association between socio-demographic characteristics and sexual risk level. Data was analyzed using SPPSS version 22, p value was set at 0.05. Results: Almost half 48(48.5%) of the respondents were between the age range 20-24years and two third 61(61.6%) of them were female and 27(27.3%) had up to senior secondary education attainments. Majority 73(73.7%) of them have been on the street for more than 3months and 32 (32.3%) professed that the reason they were on the street was to search for job while 25 (25.3%) because of family disharmony among parents. Eighty six (86.9%) of the respondents were sexually active, 31 (36.0%) of which have more than four sexual partners. Duration of stay on the street and their educational status were determinants of risky sexual behavior and polygamous setting was found to be statistically significant(p value =0.035) with reproductive health challenges. Conclusion: There is high risk sexual practice among street youths in Ikorodu Local Government. Strategic interventions aimed at minimizing sexual risky behaviors among street youths should focus on reducing the duration of stay on the street as well as increasing access to contraception.

Caregivers' perception and determinants of delayed presentation of children with severe malaria in an emergency room in Benin City, Nigeria

Introduction: Severe malaria is a leading cause of mortality due to late presentation to health facilities. Hence, there is a need to identify and mitigate factors promoting delayed presentation with severe malaria. Objective: This study aimed to evaluate determinants of delayed presentation of children with severe malaria in a tertiary referral hospital. Methods: This study adopted a descriptive, cross-sectional design. The participants were children with a diagnosis of severe malaria, based on WHO diagnostic criteria. Delayed presentation was defined as presentation at the referral centre at >3 days of illness. Inferential analyses were done to identify factors associated with delayed presentation. P < 0.05 was considered statistically significant. Results: A total of 126 children with severe malaria participated in the study; their mean (standard deviation) age was 4.2 (5.3) years. The prevalence of delayed presentation in this study is 37.3%. Socio-economic class (P = 0.003); marital status (P = 0.015) and the number of health facilities visited before admission in the referral centre (P = 0.008) were significantly associated with delayed presentation. Children from upper socio-economic class were thrice more likely to present late, compared to those from lower social class (odds ratio [OR] = 3.728, 95% confidence interval [CI]: 1.694­8.208; P = 0.001). Likewise, the Yorubas were more delayed than the Binis (OR = 0.408, 95% CI: 0.180­0.928; P = 0.033). There was a negative correlation between caregivers' perception of treatment (r = −0.113, P = 0.21) of convulsion in severe malaria and timing of presentation. Conclusions: Delayed presentation is common with multifactorial determinants in the setting. Health education of caregivers on the consequences of delayed presentation in severe malaria is desirable.

Data on the survival times of breast cancer patients in a Teaching Hospital, Osogbo.

In a bid to assess the contribution of prognostic factors to survival times of breast cancer patients from day of presentation in Nigeria, a data was collected from Ladoke Akintola University of Technology Teaching Hospital Osogbo. This is a retrospective data culled from the case note files of the breast cancer patients. The survival time of the patients was recorded as the difference between the day of presentation and the day of last contact. The data is censored at 1 year. The prognostic factors considered are years of breastfeeding(In years), Age at menarche, stage at presentation, neoadjuvant treatment offered and use of contraceptives. Four survival models were applied to the data to assess the contribution of the prognostic factors to survival times.

Awareness and Utilization of Adolescent Reproductive Health Services among In-School Adolescents in Urban and Rural Communities in Oyo State.

INTRODUCTION: Adolescents require a range of scientifically accurate sexual and reproductive health information and services. Adolescent reproductive health services (ARHSs) are an integral part of adolescent health and it is pertinent that adolescents know about them to be able to benefit from them. This study was to assess the awareness and utilization of adolescents in Oyo State about ARHSs. MATERIALS AND METHODS: A descriptive cross-sectional study carried out among in-school adolescents where 225 respondents each were selected for the rural and urban groups using a multi-stage sampling technique. Data were collected using a semi-structured questionnaire, and analysis was performed with SPSS version 22. RESULTS: A total of 225 rural and 225 urban respondents participated in this study, with a mean age of 14.3 ± 1.93 and 13.9 ± 2.03 for rural and urban respondents, respectively. Few of the respondents (59, 13.1%) were aware of the existence of ARHS, of which, 34 (57.6%) were of the urban respondents and 25 (42.4%) were from the rural respondents. Only 36 (7.8%) of respondents had ever utilized ARHS with 22 (61.1%) from urban communities. The major reason why almost half of 207 (49.6%) of the adolescents had never been to a facility rendering ARHS before was that they did not know where to go, which was higher among the rural respondents. CONCLUSIONS: Awareness of ARHSs was lower among rural respondents, leading to poor utilization of such service. It is, therefore, recommended that more youth-friendly environments should be made available and accessible to adolescents, especially in rural areas (114, 53.3%).