Table 1.

Number of Participants in Each Smoking Change Stratum

	Baseline
EOP	NS	Light	Heavy	Total
NS	35a	28	8	71
Light	6	67	20	93
Heavy	2	20	74	96
Total	43	115	102	260

Note. EOP = end of pregnancy; NS = nonsmoking.

^aThis group, classified as nonsmoking at baseline and EOP, was excluded.