Table 3.

Means and prevalences for outcomes in pregnancies where the mother was not smoking, was smoking, and where smoking status is missing

	Mean/prevalence (95% confidence interval) per smoking status
Outcome	SDP=0	SDP=1	SDP=missing
Birth weight (grams)	3588 (3587, 3589)	3388 (3386, 3390)	3496 (3493, 3500)
Preterm birth	4.6% (4.6%, 4.7%)	6.1% (6.0%, 6.2%)	7.7% (7.6%, 7.9%)
Born small for gestational age	4.9% (4.8%, 4.9%)	11.4% (11.3%, 11.5%)	6.3% (6.1%, 6.4%)
Low academic achievement	6.9% (6.9%, 7.0%)	17.5% (17.4%, 17.7%)	11.2% (10.9%, 11.4%)
General cognitive ability (9-point score)	5.29 (5.28, 5.30)	4.65 (4.64, 4.67)	5.07 (5.03, 5.10)
Criminality	8.0% (7.9%, 8.1%)	14.7%(14.5%, 14.9%)	11.2% (10.9%, 11.5%)
Violent criminality	1.3% (1.3%, 1.3%)	3.8% (3.7%, 3.9%)	2.5% (2.4%, 2.6%)
Drug misuse	4.2% (4.1%, 4.3%)	8.6% (8.4%, 8.7%)	6.4% (6.1%, 6.7%)

Note: Values are from the analytic samples (column “After elimination” in Table 1).