Table 1 Distribution of demographic characteristics and risk factors in the training set and validation set
From: Development and validation of a predictive model for suicidal thoughts and behaviors among freshmen
Variables | Total data set | Training set | Validation set |
|---|---|---|---|
N = 4560(%) | N1 = 2934(%) | N2 = 1626(%) | |
Age (M ± SD) | 18.34 ± 0.80 | 18.43 ± 0.85 | 18.18 ± 0.67 |
Number of lifetime severe traumatic events (M ± SD) | 1.23 ± 1.25 | 1.25 ± 1.29 | 1.21 ± 1.16 |
Sex | Â | Â | Â |
 Male | 1751(38.4) | 1190(40.6) | 561(34.5) |
 Female | 2809(61.6) | 1744(59.4) | 1065(65.5) |
Residence | Â | Â | Â |
 Urban | 1609(35.3) | 1156(39.4) | 453(27.9) |
 Rural | 2951(64.7) | 1778(60.6) | 1173(72.1) |
One Child | Â | Â | Â |
 No | 2861(62.7) | 1764(60.6) | 1097(67.5) |
 Yes | 1699(37.3) | 1170(39.9) | 529(32.5) |
Major | Â | Â | Â |
 Non-medicine | 3287(72.1) | 2273(77.5) | 1014(62.4) |
 Medicine | 1273(27.9) | 661(22.5) | 612(37.6) |
Nuclear family | Â | Â | Â |
 No | 818(17.9) | 518(17.7) | 300(18.5) |
 Yes | 3742(82.1) | 2416(82.3) | 1326(81.5) |
Always solo activity | Â | Â | Â |
 No | 4145(90.9) | 2669(91.0) | 1476(90.8) |
 Yes | 415(9.1) | 265(9.0) | 150(9.2) |
Bigotry under pressure | Â | Â | Â |
 No | 3859(84.6) | 2501(85.2) | 1358(83.5) |
 Yes | 701(15.4) | 433(14.8) | 268(16.5) |
Socially oriented perfectionism | Â | Â | Â |
 No | 3293(72.2) | 2048(69.8) | 1245(76.6) |
 Yes | 1267(27.8) | 886(30.2) | 381(23.4) |
Drinking to relieve stress | Â | Â | Â |
 No | 4292(94.1) | 2762(94.1) | 1530(94.1) |
 Yes | 268(5.9) | 172(5.9) | 96(5.9) |
Autonomy attitude | Â | Â | Â |
 No | 2736(60.0) | 1717(58.5) | 1019(62.7) |
 Yes | 1824(40.0) | 1217(41.5) | 607(37.3) |
Parental marital satisfaction | Â | Â | Â |
 Satisfaction | 4007(87.9) | 2602(88.7) | 1405(86.4) |
 Dissatisfaction | 553(12.1) | 332(11.3) | 221(13.6) |
Mother emotional warmth | Â | Â | Â |
 No | 1030(22.6) | 684(23.3) | 346(21.3) |
 Yes | 3530(77.4) | 2250(76.7) | 1280(78.7) |
Others social support | Â | Â | Â |
 No | 422(9.3) | 278(9.5) | 144(8.9) |
 Yes | 4138(90.7) | 2656(90.5) | 1482(91.1) |
Suicidal thoughts and behaviors | Â | Â | Â |
 No | 4334(95.0) | 2788(95.0) | 1546(95.1) |
 Yes | 226(5.0) | 146(5.0) | 80(4.9) |