Risk factors for nightblindness among women of childbearing age in Cambodia
2003
Semba, R.D. | Pee, S de | Panagides, D. | Poly, O. | Boem, M.W.
Objective: To characterize risk factors for nightblindness among nonpregnant women of childbearing age, a group recently recognized to be at high risk of vitamin A deficiency in some developing countries. Design: Case-control study. Setting: The study included >15 000 households in National Micronutrient Survey of Cambodia conducted in 2000. Subjects: The prevalence of nightblindness among 13 358 nonpregnant women was 2.0%. A total of 328 nonpregnant women with nightblindness were matched by province with 1009 nonpregnant women without nightblindness. Methods: Univariate and multivariate logistic regression models were used to estimate odds ratios (ORs) as estimates of the relative risk of factors associated with nightblindness. Results: In a final model, materials in the wall of the house (OR 1.4, 95% confidence interval (CI) 0.9-2.0), land ownership <=0.5 hectares (OR 1.4, 95% CI 1.0-1.9), nightblindness in last pregnancy (OR 44.5, 95% CI 29.2-67.8), parity >3 (OR 1.5, 95% CI 1.0-2.1), diarrhea within the last 2 weeks (OR 1.9, 95% CI 1.3-2.8), maternal body mass index <18.5 (OR 1.8, 95% CI 1.2-2.7), and lack of consumption of vitamin A-rich animal foods in the last 24 h (1–60 retinol equivalents (RE) OR 1.1 , 95% CI 0.7-1.6; >=60 RE, OR 0.7, 95% CI 0.4-1.0) were associated with nightblindness among nonpregnant women. Conclusions: Women of childbearing age in Cambodia with low socioeconomic status, low consumption of vitamin A-rich animal foods, a history of nightblindness during the previous pregnancy, parity >3, malnutrition, and diarrhea have a higher risk of nightblindness.
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