917068.fig.004a
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917068.fig.004b
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917068.fig.004c
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917068.fig.004d
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Figure 4: Hazard curves for the Cox proportional regression. (a) Comparing infants with siblings (green line) and those without (blue line). (b) Comparing infants with smokers in the household (green line) and those without (blue line). (c) Comparing infants with ≥5 individuals in the household (green line) and those with ≤5 members (blue line). (d) Comparing infants attending daycare (green line) versus nonattendees (blue line).