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. 2022 Jan 10;301:337–344. doi: 10.1016/j.jad.2021.12.123

Table 2.

Socio-demographic characteristics and mental health status of children and adolescents (N = 4391).

Characteristics Reported weekly weighted average sleep duration, h/ night
χ2 P value
<8 8,9 9,10 10,11 ≥11
Sex 13.891 0.008
Male 64(43.0%) 332(45.9%) 1009(52.0%) 551(51.1%) 161(55.1%)
Female 85(57.0%) 392(54.1%) 933(48.0%) 527(48.9%) 131(44.9%)
Age 817.05 <0.001
≤9 2(1.6%) 8(1.2%) 160(9.8%) 358(27.4%) 88(30.6%)
10–12 14(10.9%) 110(16.5%) 507(31.0%) 462(35.3%) 85(29.5%)
13−15 80(62.0%) 445(66.7%) 918(56.1%) 479(36.6%) 115(39.9%)
≥16 33(25.6%) 104(15.6%) 52(3.2%) 9(0.7%) 0(0.0%)
Maternal education 22.386 0.004
Secondary school or lower 12(14.3%) 46(9.5%) 156(9.7%) 84(8.9%) 36(14.0%)
High school 66(78.6%) 403(82.9%) 1377(85.9%) 830(87.9%) 211(82.1%)
College or higher 6(7.1%) 37(7.6%) 70(4.4%) 30(3.2%) 10(3.9%)
Paternal education 20.885 0.007
Secondary school or below 8(9.5%) 37(7.6%) 133(8.3%) 62(6.6%) 28(10.9%)
High school 63(75.0%) 399(82.1%) 1349(84.2%) 821(87.0%) 215(83.7%)
College or above 13(15.5%) 50(10.3%) 121(7.6%) 61(6.5%) 14(5.5%)
Annual household income (CNY) 19.421 0.247
<100k 18(21.4%) 72(14.8%) 201(12.5%) 127(13.5%) 41(16.0%)
100k to 200k 26(31.0%) 157(32.3%) 517(32.6%) 309(32.7%) 92(35.8%)
200k to 400k 24(28.6%) 139(28.6%) 515(32.1%) 319(33.8%) 76(29.6%)
>400k 7(8.3%) 67(13.8%) 229(14.3%) 122(12.9%) 32(12.5%)
Others 9(10.7%) 51(10.5%) 141(8.8%) 67(7.1%) 16(6.2%)
Parents weekly weighted average sleep duration (h/night) 303.696 <0.001
<8 48(36.6%) 169(26.9%) 233(13.6%) 96(10.0%) 24(9.3%)
8,9 44(33.6%) 270(42.9%) 732(42.6%) 334(34.9%) 69(26.6%)
9,10 29(22.1%) 165(26.2%) 646(37.6%) 402(42.1%) 112(43.2%)
10,11 7(5.3%) 20(3.2%) 80(4.7%) 95(9.9%) 28(10.8%)
≥11 3(2.3%) 5(0.8%) 28(1.6%) 29(3.0%) 26(10.0%)
61.624 <0.001
Depression
No 90(60.4%) 557(76.93%) 1628(83.83%) 889(82.47%) 237(81.16%)
Yes 59(39.6%) 167(23.07%) 314(16.17%) 189(17.53%) 55(18.84%)
Anxiety 77.985 <0.001
No 76(51.0%) 506(69.9%) 1532(78.9%) 840(77.9%) 228(78.1%)
Yes 73(49.0%) 218(30.1%) 410(21.1%) 238(22.1%) 64(21.9%)
Stress 93.76 <0.001
No 95(63.8%) 581(80.3%) 1721(88.6%) 938(87.0%) 256(87.7%)
Yes 54(36.2%) 143(19.8%) 221(11.4%) 140(13.0%) 36(12.3%)