Fig. 1
From: Household air pollution and under-five mortality in India (1992–2006)
Mortality trend in all age-groups of children under-five associated with HAP in India. Note: P for interaction based on likelihood ratio test of ‘period’ by ‘exposure to polluting fuels’. Odds ratios (OR) for linear trend (i.e. the period effects) for each exposure group (clean or polluting fuel) were adjusted for wealth index, place of residence, mother’s age, mother’s education, mother’s working status, sex of child, breastfeeding status, kitchen location and type of house