Maternal post-natal tobacco use and current parental tobacco use is associated with higher body mass index in children and adolescents: an international cross-sectional study

Table 2 Association between the number of cigarettes smoked daily by parents and BMI of the children, compared to BMI of children whose parents do not smoke (+/− kg/m², (SE) and P value

Number of cigarettes smoked daily	None	1–9	10–19	20–29	30+
Maternal P < 0.0001	-	+0.04 kg/m² (0.04)	+0.20 kg/m² (0.04)	+0.35 kg/m² (0.05)	+0.51 kg/m² (0.14)
Paternal P < 0.0001	-	+0.06 kg/m² (0.03)	+0.13 kg/m² (0.03)	+0.19 kg/m² (0.03)	+0.34 kg/m² (0.06)

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