Aging, Pediatrics, Perinatology and Child Health, Urban Studies, Demography
13
Scopus Publications
138
Scholar Citations
6
Scholar h-index
4
Scholar i10-index
Scopus Publications
Burden of neonatal and infant mortality in relation to mother’s age at birth: a regional analysis based in Odisha Ujjwal Das, Subhashree Behera Discover Public Health, 2026 Infant Mortality Rate (IMR) and Neonatal Mortality Rate (NMR) remain major public health concerns, particularly among children born to underage mothers. The present study examine the spatial variations in IMR and NMR across districts and identify the socio-demographic and economic determinants associated with higher mortality among children born to underage mothers. This study uses data from various round of Sample registration system and the National Family Health Survey-5 (2019–21). The sample includes 8,522 children born in the five years preceding the survey. Bivariate and multivariate analyses were conducted to evaluate the association between IMR/NMR and maternal age groups (< 18, 18–21, 22–30 years). Spatial analysis using bivariate LISA maps was applied to identify high-risk districts and spatial clustering patterns. The findings indicate that children born to mothers under 18 years face significantly higher IMR and NMR compared to those born to older mothers. Districts like Koraput, Kalahandi, and Nabarangpur showed high-high clustering of early maternal age and infant deaths. Socioeconomic indicators such as education level, birth order, wealth index, and rural residence were also strongly associated with infant outcomes. Maternal age at childbirth is a critical determinant of infant survival. Delaying age at first birth, improving female education, ensuring access to quality maternal health services, and addressing regional disparities are essential to reducing infant and neonatal mortality.
Indoor air pollution and its impact on child health outcomes in India Ujjwal Das, Luwish Das Discover Public Health, 2026 Indoor air pollution from the use of solid cooking fuels is a major public health concern in India, particularly affecting child health. This study aims to examine the impact of cooking fuel type (solid vs. clean) on infant mortality rate (IMR), neonatal mortality rate (NMR), acute respiratory infections (ARI), and low birth weight (LBW) in children across various socio-demographic and economic backgrounds in India. This cross-sectional study utilized data from the fifth round of the National Family Health Survey (NFHS-5) conducted in 2019–21. Bivariate analysis was used to estimate the prevalence of ARI, LBW, IMR, and NMR by cooking fuel type and background characteristics. Multivariate logistic regression was applied to assess the adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for ARI, LBW, IMR, and NMR outcomes associated with solid fuel use. ArcGIS was used for mapping analysis. Using nationally representative data from the National Family Health Survey (NFHS-5), this study analyzed children under five years of age across households using solid fuels (dung, wood, coal, and charcoal) and clean fuels (LPG, electricity, and ovens). A substantial proportion of children resided in solid fuel–using households, particularly in rural and socioeconomically disadvantaged settings. Children exposed to solid fuels had significantly higher odds of neonatal and infant mortality compared to those using clean fuels (IMR: OR = 1.55, 95% CI 1.26–1.85; NMR: OR = 1.65, 95% CI 1.23–1.95). The prevalence of acute respiratory infection and low birth weight was consistently higher among solid fuel–using households across most socio-demographic groups. Low birth weight was particularly prevalent among adolescent mothers aged 15–19 years, women with no formal education, poorer wealth quintiles, and rural residents. Female children exhibited a higher prevalence of low birth weight than males in both fuel categories. Maternal education emerged as a strong protective factor, while states with higher reliance on solid fuels, such as Bihar and Uttar Pradesh, showed markedly poorer child health outcomes. Solid fuel use for cooking is a significant risk factor for increased infant and neonatal mortality, respiratory illness, and low birth weight in India. Accelerating the transition to clean cooking fuels, particularly among rural and socioeconomically disadvantaged populations, is crucial for improving child survival and health in India.
Understanding economic disparities in elderly health outcomes: a decomposition analysis in Bankura district Ujjwal Das, Nishamani Kar BMC Public Health, 2025 BACKGROUND: Economic inequality negatively affects population health by increasing social violence, discrimination, and reduced social trust, while also limiting equitable access to healthcare services. Given these challenges, the present study aims to measure socioeconomic inequality in health outcomes among the elderly population in the Bankura district. METHODS: The present study was conducted using a cross-sectional survey with a multi-stage random sampling design among elderly individuals in the Bankura district of West Bengal. The total sample size for the study was 480. To measure socioeconomic inequality in health outcomes, the Concentration Index (CI) and Concentration Curve (CC) were applied. Additionally, the regression-based Wagstaff decomposition method of the Concentration Index was used to identify factors associated with health inequality and their relative contributions. RESULTS: The study findings indicate that 91% of elderly individuals suffer from at least one chronic disease. The Concentration Index values suggest that cholesterol (CI = 0.40), diabetes (CI = 0.29), and hypertension (CI = 0.04) were more concentrated among the wealthier population, whereas bone diseases (CI = -0.11), lung diseases (CI = -0.24), and heart diseases (CI = -0.04) were more prevalent among the poorer population. The decomposition analysis revealed that non-vegetarian food preference (64.5%), being poor (15.4%), smoking (13.2%), alcohol consumption (26.2%), and older age (60 years and above, 3.8%) were the major contributing factors to pro-rich inequality in chronic disease prevalence. Furthermore, the probit regression model indicated that the likelihood of chronic disease increased with age (coefficient = 0.82), being alone (coefficient = 0.32), alcohol consumption (coefficient = 0.37), and smoking (coefficient = 0.21). CONCLUSION: The study reveals that health inequality was more pronounced among economically disadvantaged individuals due to low levels of education and engagement in unhealthy, risky behaviors. Policymakers should focus on improving health-related infrastructure in rural areas, particularly for the oldest-old population.
Prevalence of multiple lung diseases among the people and associated with wealth status and behavior factors: a longitudinal study in West Bengal Ujjwal Das, Nishamani Kar, Gowthamm Mandala, Sanju Purohit Journal of Health Population and Nutrition, 2025 Background Chronic lung diseases pose a significant public health challenge in India. The present study aims to examine the prevalence of lung diseases in relation to wealth status and behavioural factors among adults in West Bengal. Methods This study utilized data from the first wave of the Longitudinal Ageing Study in India (LASI), conducted in 2017–18. The outcome variable was the presence of lung diseases. The key explanatory variables included household wealth status and behavioural factors such as alcohol, smoking, and tobacco consumption. To measure inequality, the rich-poor ratio and rich-poor difference were calculated based on Monthly Per Capita Expenditure (MPCE) quintiles. Binary logistic regression was employed to assess the association between chronic lung diseases and various socio-demographic and health-related factors. Additionally, life table techniques were used to estimate the total number of years of life lost due to alcohol, smoking, and tobacco consumption across different wealth categories. Results The prevalence of lung diseases among individuals aged above 75 years was 17%. Prevalence was higher among older males than females (15% vs. 8%). Among those who frequently consumed alcohol, smoked, and used tobacco, the prevalence rates were 8%, 10%, and 21%, respectively. The risk of lung diseases was higher among uneducated individuals compared to those with education (OR = 1.46 vs. OR = 0.63). The total years of life lost due to lung diseases by age 75 ranged from 10.9 years (CI 11.5–13.2) in the poorest quintile (Q1) to 25.3 years (CI 24.8–25.9) in the richest quintile (Q5). Conclusion Given the higher prevalence of lung diseases among older adults, health programs should aim to increase awareness and address substance use, particularly alcohol consumption, smoking, and tobacco use among vulnerable populations. Strengthening lung health initiatives tailored to behavioural and socio-economic risk factors is essential for improving health outcomes.
Impact of normal vs. caesarean deliveries on child nutritional status and mortality in India: insights from NFHS-5 data Ujjwal Das, Nihar Ranjan Rout BMC Pediatrics, 2024 OBJECTIVE: Skilled birth attendance and place of delivery have a significant effect on child growth. The present paper examined the mode of delivery and its impact on child health among children 0-59 months in India. METHODS: A total of 200,794 samples were used in the study. Among them, 45,784 births were delivered by C-section, and the remaining 150,010 births were delivered through normal delivery. Life table estimation of mortality, as well as bivariate and multivariate logistic regression, were used to identify the association between child health and mode of delivery using data from the fifth round of the National Family Health Survey conducted in 2019-21. RESULTS: The study results indicate that children born through normal delivery had significantly lower rates of stunting, wasting, and underweight compared to those born via C-section. Additionally, the likelihood of a new-born baby dying during the neonatal period was higher for those delivered by C-section compared to those delivered vaginally, which holds true for various background characteristics. Mothers with a 3rd or higher order birth who deliver via C-section face a higher risk of their baby dying during the neonatal and infant periods compared to those with a 2nd order birth. CONCLUSION: The conclusion of the study found that C-section delivery may adversely affect child undernutrition as compared to normal birth. These findings would help formulate the policies and implement actions that would improve the quality of painless labor and immediate delivery in health facilities particularly public hospitals and shall reduce the C-section birth.
Menstrual and reproductive factors associated with risk of breast cancer among Indian women: a cross sectional study from National Family Health Survey, 2019-21 Ujjwal Das, Sabita Soren, Nishamani Kar Archives of Public Health, 2024 Background The breast cancer is common cancer in women globally. The risk of breast cancer is strongly associated with women’s menstrual and reproductive factors that have been established in different countries. Therefore present study was aim to explore the association between menstrual and reproductive factors and the risk of breast cancer screening in Indian women. Methods The present study data has been used fifth round of the National Family Health Survey (NFHS-V) with 724,115 women in aged 15–49 in 2019-21. The self-reported ever screened of breast cancer for women aged 30–49 was the main outcome variable of the study. Logistic regression models were used to estimate odds ratios and 95% confidence intervals for breast cancer by menstrual and reproductive factors adjusted for potential confounders. Results Late menarche (OR = 2.20, 95% CI: 1.48–3.28), irregular menstrual cycle (OR = 1.29, 95% CI: 1.08–3.53)), delay age at first birth (OR = 1.93, 95% CI: 1.11–3.04) and contraceptive pill used (OR = 1.11, 95% CI: 0.74–2.10) were significantly associated to increases the uptake of screening breast cancer. While, a higher number of birth (OR = 0.52, 95% CI: 0.10–1.03), and long duration of breast-feeding practice (OR = 0.75, 95% CI: 0.63–0.91) were reduced to participate for screening breast cancer. Conclusion The results of the study confirm the role of menstrual and reproductive factors in breast cancer in Indian women. Therefore, our findings are imperative for developing breast cancer prevention strategies and better preparedness. Creating awareness and providing knowledge on cancer could be key strategies for the reduction of breast cancer in Indian reproductive age group women.
Indoor air pollution and its impact on child health outcomes in India U Das, L Das Discover Public Health 23 (1), 265 , 2026 2026 Citations: 1
Prevalence and Patterns of Non-Communicable Diseases among the older adult in Bankura District: A Geo-Spatial Analysis U Das, N Kar Emerging Trends in Public Health: Implications and Challenges 1, 196-216 , 2026 2026
Burden of neonatal and infant mortality in relation to mother’s age at birth: a regional analysis based in Odisha U Das, S Behera Discover Public Health 23 (1), 141 , 2026 2026 Citations: 1
Economic Inequality of Health Outcomes Among the Elderly in Bankura District: A Decomposition Analysis UDN Kar Health Empirics 1 (3), 47-63 , 2025 2025
Prevalence of multiple lung diseases among the people and associated with wealth status and behavior factors: a longitudinal study in West Bengal U Das, N Kar, G Mandala, S Purohit Journal of Health, Population and Nutrition , 2025 2025
Coexisting Morbidities among Older Adults with Hypertension in India: Prevalence and Risk Analysis M Tipiria, U Das Archives of Gerontology and Geriatrics Plus, 100226 , 2025 2025
Sustainable Strategies for Mitigating Indoor Air Pollution and Cardiovascular Health Risks Among Aging Populations: A Case Study of Bankura District U Das, N Kar, S Saika Environment and Public Health: Insights Towards Theory, Evidences and … , 2025 2025
A Case Study of Bankura District U Das, N Kar, S Saika Environment and Public Health: Insights Towards Theory, Evidences and … , 2025 2025
Urban Poverty and Child Malnutrition in India: A Geographical Analysis U Das, SK Mohanty Nutrition and Food Security in India: Enriching the Cycle of Research … , 2025 2025 Citations: 2
Is Virginity a Matter of Dignity or a Lack of Opportunity? Exploring the Paradoxical Relationship Between Premarital Sex and Education Among Youth in India U Das Sexuality & Culture, 1-17 , 2025 2025
Understanding economic disparities in elderly health outcomes: a decomposition analysis in Bankura district U Das, N Kar BMC Public Health 25 (1), 3015 , 2025 2025
health on the move: cardiovascular disease risk among ageing male migrants in India V Ahamad, U Das Archives of Gerontology and Geriatrics Plus, 100196 , 2025 2025 Citations: 3
Prevalence of diabetes and disability among older adults in West Bengal and India: A comparative analysis U Das, N Kar, T Riba, NR Rout Diabetes & Metabolic Syndrome: Clinical Research & Reviews 19 (4), 103236 , 2025 2025 Citations: 1
Buckling resistance of various pathfinding endodontic instruments: An in vitro study U Das, RK Das, KK Saha, LB Murmu, S Banerjee, R Nag Journal of Conservative Dentistry and Endodontics 28 (4), 384-388 , 2025 2025
Prevalence & Location of Mid Mesial Canal Based on Interorifice Distance Between MB-Ml Canals in Permanent Mandibular 1st, 2nd Molars In West Bengal Population–“A Cone Beam … P Gupta, KK Saha, U Das, P Mondal, K Mandal, K Chowdhury UNIVERSITY JOURNAL OF DENTAL SCIENCES 11 (1) , 2025 2025
Socioeconomic status and morbidity pattern among the elderly population in Bankura district, West Bengal U Das, N Kar BLDE University Journal of Health Sciences 9 (2), 161-171 , 2024 2024
Impact of normal vs. caesarean deliveries on child nutritional status and mortality in India: insights from NFHS-5 data U Das, NR Rout BMC pediatrics 24 (1), 781 , 2024 2024 Citations: 9
The prevalence, configuration, and prediction of second mesiobuccal canals in maxillary second molars in West Bengal population–A cone-beam computed tomography study M Sakthivel, U Das, LB Murmu, KK Saha Journal of Conservative Dentistry and Endodontics 27 (10), 999-1003 , 2024 2024 Citations: 3
Prevalence and Pattern of Morbidity Triads among the Elderly Population: A Cross-sectional Study in Bankura District, West Bengal U Das, N Kar Archives of Medicine and Health Sciences 12 (3), 345-353 , 2024 2024
Beyond the Marriage: Inequality of Age at First Sex Among the Youth in India—Recent Evidenced from NFHS-5 U Das, N Kar Global Social Welfare, 1-12 , 2024 2024 Citations: 3
MOST CITED SCHOLAR PUBLICATIONS
Prevalence and risk factor of diabetes among the elderly people in West Bengal: evidence-based LASI 1st wave U Das, N Kar BMC endocrine disorders 23 (1), 170 , 2023 2023 Citations: 38
The role of place of delivery in preventing neonatal and infant mortality rate in India U Das, B Chaplot, HM Azamathulla Geographies 1 (1), 47-62 , 2021 2021 Citations: 30
Are delay ages at marriage increasing? Pre-marital sexual relation among youth people in the place of residence in India U Das, S Rout BMC Women's Health 23 (1), 16 , 2023 2023 Citations: 21
River regulation and associated geo-environmental problems: A case study of lower reaches of shilabati river basin, west Bengal, India DC Ujjwal Das , Ranjana Bajpai International Journal of Ecology and Environmental Sciences 2 (4), 233-240 , 2020 2020 Citations: 10
Impact of normal vs. caesarean deliveries on child nutritional status and mortality in India: insights from NFHS-5 data U Das, NR Rout BMC pediatrics 24 (1), 781 , 2024 2024 Citations: 9
Menstrual and reproductive factors associated with risk of breast cancer among Indian women: a cross sectional study from National Family Health Survey, 2019-21 U Das, S Soren, N Kar Archives of Public Health 82 (1), 55 , 2024 2024 Citations: 6
Child and maternal health vulnerability among the indigenous population in India: Based on cross-sectional data NFHS 2015-16 U Das, N Kar, B Chaplot, P Kumar Cogent Public Health 10 (1), 2253573 , 2023 2023 Citations: 5
health on the move: cardiovascular disease risk among ageing male migrants in India V Ahamad, U Das Archives of Gerontology and Geriatrics Plus, 100196 , 2025 2025 Citations: 3
The prevalence, configuration, and prediction of second mesiobuccal canals in maxillary second molars in West Bengal population–A cone-beam computed tomography study M Sakthivel, U Das, LB Murmu, KK Saha Journal of Conservative Dentistry and Endodontics 27 (10), 999-1003 , 2024 2024 Citations: 3
Beyond the Marriage: Inequality of Age at First Sex Among the Youth in India—Recent Evidenced from NFHS-5 U Das, N Kar Global Social Welfare, 1-12 , 2024 2024 Citations: 3
Decomposing of Urban Poor/Non-Poor Differential in Childhood Malnutrition and Mortality in India, 2015-16 U Das International Journal of Engineering and Management Research 10 , 2020 2020 Citations: 3
Urban Poverty and Child Malnutrition in India: A Geographical Analysis U Das, SK Mohanty Nutrition and Food Security in India: Enriching the Cycle of Research … , 2025 2025 Citations: 2
Indoor air pollution and its impact on child health outcomes in India U Das, L Das Discover Public Health 23 (1), 265 , 2026 2026 Citations: 1
Burden of neonatal and infant mortality in relation to mother’s age at birth: a regional analysis based in Odisha U Das, S Behera Discover Public Health 23 (1), 141 , 2026 2026 Citations: 1
Prevalence of diabetes and disability among older adults in West Bengal and India: A comparative analysis U Das, N Kar, T Riba, NR Rout Diabetes & Metabolic Syndrome: Clinical Research & Reviews 19 (4), 103236 , 2025 2025 Citations: 1
Oral Hygiene Status and Dental Caries Experience in Transfusion Dependent Thalassemia Patients: An Analytical Cross-Sectional Study. SM Das, U Das, S Bhattacherjee, P Datta Indian Journal of Public Health Research & Development 15 (3) , 2024 2024 Citations: 1
Regional Pattern of Under-five Mortality in Odisha U Das, SK Mohanty POPULATION AND SOCIAL PROTECTION 129 , 2021 2021 Citations: 1
Prevalence and Patterns of Non-Communicable Diseases among the older adult in Bankura District: A Geo-Spatial Analysis U Das, N Kar Emerging Trends in Public Health: Implications and Challenges 1, 196-216 , 2026 2026
Economic Inequality of Health Outcomes Among the Elderly in Bankura District: A Decomposition Analysis UDN Kar Health Empirics 1 (3), 47-63 , 2025 2025
Prevalence of multiple lung diseases among the people and associated with wealth status and behavior factors: a longitudinal study in West Bengal U Das, N Kar, G Mandala, S Purohit Journal of Health, Population and Nutrition , 2025 2025
