Table II.

Demographics and initial PPG of non-pregnant and eligible women in the recruitment database.

Demographic characteristics of 20 087 women	At least one successful follow-up		No successful follow-up
	Number	Percentageb	Number	Percentageb
Total	12 916		7171
Age at initial pregnancy screen (years)a
<25	3369	26.1	1695	23.6
25 to <30	2245	17.4	1139	15.9
30 to <35	2064	16.0	1025	14.3
35 to <44	3619	28.2	1942	27.1
≥44	1573	12.2	1335	18.6
Missingc	46	0.35	35	0.5
Race/Ethnicitya
White, Non-Hispanic	9226	71.4	4522	63.1
Black, Non-Hispanic	532	4.1	464	6.5
Asian, Non-Hispanic	928	7.2	678	9.5
Hispanic	1727	13.4	1159	16.2
Other	378	2.9	275	3.8
Missingc	125	1.0	73	1.0
Marital statusa
Divorced	605	4.7	459	6.4
Never married	4559	35.3	2649	36.9
Married	7421	57.5	3750	52.3
Separated	165	1.3	194	2.7
Widowed	38	0.3	43	0.6
Missingc	128	1.0	76	1.1
Initial PPG statusa
Low	7504	58.1	4927	68.7
Moderate	3907	30.3	1777	24.8
High non-tryer	1072	8.3	372	5.2
High tryer	433	3.4	95	1.3

^aP-value (Chi-square test) <0.001.

^bPercentages may not add to 100 due to rounding.

^cIncludes missing, refused and do not know.