Table 1

Differences between those missing parity data and those with parity data

	Not missing parity (4025)		Missing parity (659)		Missing ASVAB (268)
	Frequency	Per cent	Frequency	Per cent	Frequency	Per cent
RGL
<5th grade	572	14.2	64	9.7	–	–
5–6th grade	562	14.0	86	13.1	–	–
7–8th grade	653	16.2	107	16.2	–	–
9–11th grade	1338	33.2	234	35.5	–	–
12th+ grade	900	22.4	168	25.5	–	–
Race/ethnicity
Hispanic	774	19.2	132	20.0	74	27.6
Black	1258	31.3	167	25.3	52	19.4
Non-Black, non-Hispanic	1993	49.5	360	54.6	142	53.0
HS degree in 1985
No	689	17.1	85	12.9	85	31.7
Yes	3251	80.8	482	73.1	60	22.3
Age in 1980 (years)
15	345	8.6	54	8.2	5	1.9
16	531	13.2	104	15.8	15	5.6
17	573	14.2	82	12.4	17	6.3
18	543	13.5	98	14.9	18	6.7
19	544	13.5	72	10.9	20	7.5
20	497	12.4	81	12.3	19	7.1
21	416	10.3	83	12.6	19	7.1
22	442	11.0	69	10.5	22	8.2
23	78	1.9	7	1.1	10	3.7
Average (mean age)	18.0		16.7		19.3
Poverty status at age 14
In poverty	1021	25.4	129	19.6	76	61.6
Not in poverty	4025	69.4	473	71.8	165	28.4
Parous in 1980
Parous	756	23.9			34	28.3
Nulliparous	2404	76.1			86	71.7

Note: percentages do not add to 100% in all cases.
ASVAB, Armed Services Vocational Aptitude Battery; RGL, Reading Grade Level.