Table 2 Prevalence of attempted suicide by sociodemographic, school and academic performance variables
Level | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Middle school (n = 14,435) | High school (n = 14,084) | |||||||||||
Sample | Attempts | % | X 2 | df | p value | Sample | Attempts | % | X 2 | df | p value | |
Sociodemographic and school | ||||||||||||
Sex | 803.0 | 1 | < 0.001 | 963.0 | 1 | < 0.001 | ||||||
Male | 7198 | 75 | 1.1 | 6963 | 119 | 1.5 | ||||||
Female | 7136 | 389 | 5.2 | 7069 | 471 | 6.8 | ||||||
School shift | 16.9 | 2 | 0.406 | 3.9 | 2 | 0.805 | ||||||
Morning | 10,963 | 336 | 3.1 | 8654 | 363 | 4.1 | ||||||
Afternoon | 3121 | 125 | 3.3 | 4141 | 172 | 4.5 | ||||||
Other | 250 | 3 | 1.5 | 1237 | 55 | 4.3 | ||||||
School yeara | 220.3 | 2 | < 0.001 | 31.0 | 2 | 0.169 | ||||||
First year (7th, 10th) | 5667 | 100 | 1.8 | 6511 | 295 | 4.8 | ||||||
Second year (8th, 11th) | 5436 | 218 | 4.0 | 3819 | 145 | 3.8 | ||||||
Third year (9th, 12th) | 3231 | 146 | 3.9 | 3702 | 150 | 3.9 | ||||||
Academic performance | ||||||||||||
Two years older than expected for grade level | 5.6 | 1 | 0.357 | 19.5 | 1 | 0.162 | ||||||
No | 13,797 | 452 | 3.1 | 12,831 | 529 | 4.1 | ||||||
Yes | 537 | 12 | 2.3 | 1201 | 61 | 5.4 | ||||||
Studying previous year | 62.0 | 1 | 0.085 | 0.6 | 1 | 0.781 | ||||||
Yes | 13,557 | 440 | 3.0 | 12,906 | 549 | 4.3 | ||||||
No | 478 | 19 | 6.2 | 891 | 37 | 4.0 | ||||||
Perceived academic performance | 94.9 | 2 | 0.011 | 49.9 | 2 | 0.052 | ||||||
Very good | 2997 | 67 | 1.8 | 2082 | 64 | 2.8 | ||||||
Good | 6458 | 216 | 3.2 | 7489 | 308 | 4.3 | ||||||
Fair or poor | 4606 | 177 | 3.8 | 4305 | 213 | 4.7 | ||||||
Number of failed courses | 48.3 | 3 | 0.105 | 28.9 | 3 | 0.298 | ||||||
None | 11,582 | 353 | 3.0 | 10,266 | 409 | 4.1 | ||||||
1 | 952 | 41 | 3.3 | 1449 | 69 | 4.7 | ||||||
2 | 615 | 30 | 3.2 | 838 | 43 | 5.9 | ||||||
3 or more | 631 | 30 | 5.4 | 992 | 55 | 4.2 | ||||||