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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Schizophr Res. 2019 Dec 9;216:330–338. doi: 10.1016/j.schres.2019.11.034

Table 1.

Demographic Descriptives of Total Sample and Ethnic Density Categories.

Ethnic Density Prior to Age 12 Ethnic Density After Age 12

Total Sample (n=1330) Concordant Discordant Other REM Mixed White Concordant Discordant Other REM Mixed White

Variable n (%) n (%) n (%)
Demographics
Gender X2=.88 (3, N=1330), p=.833 X2=.94 (3, N=1330), p=.816
 Male 487 (36.6)  250 (35.9) 48 (39.7) 149 (36.3) 40 (38.8)  167 (36.1) 52 (35.6) 212 (36.6) 56 (39.9)
 Female 843 (63.4)  447 (64.1) 73 (60.3) 260 (63.7) 63 (61.2)  296 (63.9) 94 (64.4) 370 (63.4) 83 (60.1)
Family Income X2=18.78 (3, N=1308), p<.0001 X2=11.65 (3, N=1308), p=.010
 % Below Poverty 381 (28.6)  231 (33.6) 32 (26.9) 102 (25.4) 16 (15.8)  148 (32.2) 38 (26.6) 171(29.9) 24 (17.8)
Race/Ethnicity X2=10.72 (6, N=1330), p=.100 X2=32.65 (6, N=1330), p<.0001
 Black 427 (32.2)  231(33.1) 37(30.6) 130(31.8) 29(28.2)  192(41.5) 45(30.8) 152(26.1) 38(27.3)
 Hispanic 429 (32.1)  244(35.0) 34(28.1) 121(29.6) 30(29.1)  140(30.2) 46(31.5) 194(33.3) 49(35.3)
 Asian 474 (35.7)  222(31.9) 50(41.3) 158(38.6) 44(42.7)  131(28.3) 55(37.7) 236(40.5) 52(37.4)
Immigrant Status X2=100.57 (6, N=1329), p<.0001 X2=28.55 (6, N=1329), p<.0001
 First Generation 560 (42.2)  380 (54.5) 37 (30.6) 123 (30.1) 20 (19.6)  217 (46.9) 45 (30.8) 261 (44.8) 37 (26.8)
 Second Generation 657 (49.4)  264 (37.9) 77 (63.6) 247 (60.4) 69 (67.6)  209 (45.1) 88 (60.3) 277 (47.6) 83 (60.1)
 Non-Immigrant 112 (8.4)  53 (7.6) 7 (5.8) 39 (9.5) 13 (12.7)  37 (8.0) 13 (8.9) 44 (7.6) 18 (13.0)
Lifetime Cannabis Use X2=15.18 (3, N=1319), p=.002 X2=12.26 (3, N=1319), p=.007
 % Cannabis Use 369 (28)  180 (26.1) 48 (39.7) 103 (25.3) 38 (37.3)  129 (28.0) 53 (36.6) 140 (24.2) 47 (34.6)

Mean(SD) [range] Mean(SD)

Age (years) 19.99(2.3) [18-36]  20.30(2.5) 19.68(2.1) 19.69(2.0) 19.39(1.6)  20.16(2.4) 19.74(2.0) 19.98(2.3) 19.68(2.0)
F=9.99 (3, 1328), p<.0001 F=2.26 (3, 1328), p=.080
PQ Positive 12.25(8.7) [0-43]  12.23(8.6) 16.14(9.5) 11.71(8.4) 10.01(7.9)  12.30(8.8) 14.86(9.4) 11.96(8.3) 10.58(8.4)
F=11.22 (3, 1329), p<.0001 F=6.43 (3, 1329), p<.0001

REM = racial and ethnic minority.

N’s vary on immigrant status, age, poverty index, and cannabis use due to missing data that was deleted listwise.

Some participants were over the desired age range of 18-29.