Table 2.

Estimated effect adjusted of anti-smoking legislation on birth outcomes in Peru

Outcome	2008 legislation
	Crude difference (95% CI)	Adjusted difference (95% CI)
Birth weight (g)	−4.32 (− 7.83, − 0.81)	− 3.10 (− 6.57, 0.37)
Prematurity (%)	− 0.29 (− 0.35, − 0.23)	−0.30 (− 0.42, − 0.19)
Small for gestational age (%)	−1.81 (− 1.95, − 1.68)	−0.06 (− 0.25, 0.13)

Models adjusted for the following variables: mother’s age, level of education, marital status, and parity, newborn year of birth, gender, place of birth, health care provider for childbirth, area of residence, poverty quintiles, and altitude