Figure 4From: Maternal anaemia and duration of zidovudine in antiretroviral regimens for preventing mother-to-child transmission: a randomized trial in three African countries Incidence of severe anaemia (including 95% confidence intervals) by ARV duration for all study arms (includes delivery related failures occurring at median t = 1.15 months following treatment initiation) ( P- value comparing incidence in <1 versus 1–1.9 month duration = 0.004). Back to article page