Table 2.

Agreement Between Birth Weight Data According to Birth Records and Adult Self-Reports, by Sociodemographic Factors, New York Women's Birth Cohort Adult Follow-up, 2001–2006 (n = 223)

Characteristic	No. of Participants	Sensitivity, %	Weighted Kappa	95% Confidence Interval
Maternal age at pregnancy, years
16–20	40	65	0.59	0.42, 0.77
21–30	129	72	0.63	0.53, 0.74
31–45	54	81	0.79	0.67, 0.92
Participant's age at adult survey, years
38–40	81	69	0.63	0.51, 0.75
41–42	89	74	0.69	0.58, 0.81
43–46	53	77	0.69	0.54, 0.85
Participant's ethnicity
White	63	79	0.75	0.63, 0.86
African American	76	70	0.61	0.47, 0.75
Hispanic	84	71	0.64	0.51, 0.76
Maternal education
Less than high school	100	75	0.70	0.59, 0.80
High school	89	72	0.65	0.53, 0.77
Greater than high school	31	68	0.52	0.28, 0.77
Childhood family income
Lowest	63	79	0.74	0.61, 0.87
Middle	80	75	0.72	0.61, 0.84
Highest	69	67	0.55	0.41, 0.68
Participant's education
High school graduate or less	33	67	0.57	0.37, 0.76
Technical school graduate or some college	88	73	0.68	0.56, 0.79
College graduate or more	102	75	0.70	0.59, 0.81
Participant's current income
Lowest	76	74	0.68	0.55, 0.80
Middle	72	68	0.58	0.44, 0.72
Highest	71	77	0.72	0.60, 0.85