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Table 4 Associations between type of fuel and risk of LBW

From: Exposure to cooking fuels and birth weight in Lanzhou, China: a birth cohort study

Fuel type NBW LBW ORa(95 % CI) ORb(95 % CI)
Gas 6965 371 1.00 1.00
Coal 270 70 1.92(1.37–2.69) 1.09(0.67–1.78)
Biomass 73 42 3.74(2.35–5.94) 2.51(1.26–5.01)
Electromagnetic 408 53 1.48(1.05–2.06) 1.14(0.71–1.83)
  1. aAdjusted for maternal age, education, family income, maternal weight gain, vitamin supplement during pregnancy, preeclampsia, caesarean section, parity, smoking, and ventilation
  2. bAdditional adjustment for gestational week