Table 1.

Descriptive statistics for all variables, by disability status

	Full sample	Disability status		Test statistica
		No disability	Disability
Dependent measures
Type of relationship at first sexual intercourseb
Had just met	0.034	0.033	0.038	N/S
Casual acquaintances	0.203	0.202	0.206
Going together or going steady (reference category)	0.681	0.688	0.663
Committed relationship	0.052	0.051	0.057
Other relationship	0.029	0.026	0.036
Level of discussion about birth control at first sexual intercourseb
No, didn't ever talk about birth control together	0.342	0.347	0.329	N/S
Yes, talked but only a little	0.123	0.124	0.121
Yes, talked some	0.207	0.213	0.190
Yes, talked a lot	0.328	0.317	0.360
Wanted a pregnancy at first sexual intercourseb
No (reference category)	0.826	0.835	0.801	N/S
Yes	0.041	0.040	0.044
Didn't think about it	0.032	0.027	0.044
Didn't care	0.101	0.098	0.111
Adolescent limitationsc
Type of condition
No condition (reference category)	0.728
Chronic illness only	0.070	–	–
Sensory condition only	0.123	–	–
Learning disability or emotional condition only	0.036	–	–
Multiple conditions	0.043	–	–
Severity of limitation
Not limited in 1997 (reference category)	0.898
Mild limitation	0.083	–	–
Serious limitation	0.020	–	–
Adolescent characteristics
Race/ethnicityb
Non-Hispanic Black	0.269	0.267	0.274	***
Hispanic	0.203	0.219	0.158
Non-Hispanic White (reference category)	0.529	0.514	0.569
Age at first sexual intercoursed	16.240 (2.022)	16.278 (2.039)	16.138 (1.972)	N/S
Family characteristics
Two biological parentse	0.426	0.454	0.353	***
Parental highest educationb
Less than high school (reference category)	0.167	0.174	0.148	*
High school only	0.338	0.322	0.381
More than high school	0.495	0.505	0.470
Household income-to-poverty ratiob
0–100	0.241	0.234	0.259	*
101–200	0.217	0.209	0.237
201 and above (reference category)	0.542	0.557	0.504
Biological mother's age at adolescent's birthd	25.279 (5.413)	25.387 (5.428)	24.988 (5.366)	†
Nf	2,729	1,987	742

Source: National Longitudinal Survey of Youth 1997, Waves 1–11

N/S non-significant

^†p < .10

^*p < .05

** p < .01

^***p < .001; two-tailed tests

^aContrasts those with no reported disability and those with any reported disability

^bData shown are proportions with chi-square tests reported

^cData shown are proportions

^dData shown are means with standard deviations in parentheses and t-tests reported

^eData shown are proportions with two-sample test of proportions reported

^fExcept for the wanted a pregnancy outcome, where full sample N = 808, no disability sample N = 582, and disability sample N = 226