Table 1.
Summary statistics of main variables
| Variables | Boys, N = 1085a | Girls, N = 1575a | p-valueb | Effect size |
|---|---|---|---|---|
| Age groups (valid N = 2660) | 0.072 | 51.6% (0.035)c | ||
| 12–15 years | 306 (28%) | 395 (25%) | ||
| 16–19 years | 779 (72%) | 1,180 (75%) | ||
| Country of birth (valid N = 2660) | 0.5 | 0.013d | ||
| Norway | 1013 (93%) | 1460 (93%) | ||
| Other country | 72 (6.6%) | 115 (7.3%) | ||
| Living arrangements (valid N = 2660) | 0.033 | 0.051d | ||
| Both parents | 914 (84%) | 1268 (81%) | ||
| Mother or father | 151 (14%) | 262 (17%) | ||
| Other | 20 (1.8%) | 45 (2.9%) | ||
| Parent laid off (% yes; valid N = 1898) | 173 (23%) | 241 (21%) | 0.4 | 0.021d |
| Worry I will get infected (valid N = 2646) | < 0.001 | 56.8% (0.132)c | ||
| Not true | 663 (61%) | 765 (49%) | ||
| Somewhat true | 367 (34%) | 668 (43%) | ||
| Completely true | 49 (4.5%) | 134 (8.6%) | ||
| Worry, family infected (valid N = 2647) | < 0.001 | 59.2% (0.177) 3 | ||
| Not true | 172 (16%) | 124 (7.9%) | ||
| Somewhat true | 440 (41%) | 506 (32%) | ||
| Completely true | 467 (43%) | 938 (60%) | ||
| Worry about future (valid N = 2644) | < 0.001 | 55.7% (0.106) c | ||
| Not true | 568 (53%) | 664 (42%) | ||
| Somewhat true | 341 (32%) | 564 (36%) | ||
| Completely true | 169 (16%) | 338 (22%) | ||
| Physical wellbeing (valid N = 2584)e | 44 (9) | 41 (9) | < 0.001 | 0.380f |
| Psychological wellbeing (valid N = 2574)e | 45 (9) | 41 (8) | < 0.001 | 0.578f |
| Autonomy and parent relation (valid N = 2550)e | 52 (9) | 50 (9) | < 0.001 | 0.243f |
| Social support and Peers (valid N = 2560)e | 46 (9) | 44 (9) | < 0.001 | 0.183f |
| School-related (valid N = 2555)e | 43 (9) | 41 (9) | < 0.001 | 0.215f |
aStatistics presented: n (%); mean (SD)
bStatistical tests: chi-square test of independence for categorical data; two-sample t-test for continuous data
cProbability that variable for girls is larger than variable for boys, Cramer’s V in parenthesis
dCramer’s V
eT-score at baseline
fCohen’s D