Table 2. Prevalence of suicidal ideation according to sociodemographic and historical aspects of violence within the last 12 months before the study among high school students from the public and private network of Teresina, Piauí, 2016.
| Variable | Total | Suicidal ideation | Gross PR | Adjusted PRa | |||
|---|---|---|---|---|---|---|---|
|
|
|
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|
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| (n = 674) | n | % | 95%CI | p-valueb | 95%CI | p-valuec | |
| Suicidal ideation | 674 | 53 | 7.9 | - | - | - | - |
| Age (in years) | 0.097 | 0.402 | |||||
| 14 to 16 | 346 | 33 | 9.5 | 1.56 (0.92–2.67) | 1.31 (0.70–2.45) | ||
| 17 to 19 | 328 | 20 | 6.1 | 1 | 1 | ||
| Sex | < 0.05 | 0.052 | |||||
| Female | 382 | 39 | 10.2 | 2.13 (1.18–3.85) | 1.87 (0.96–3.62) | ||
| Male | 292 | 14 | 4.8 | 1 | 1 | ||
| Skin color | 0.290 | 0.330 | |||||
| Blackd | 522 | 38 | 7.3 | 1 | 1 | ||
| Othere | 152 | 15 | 9.9 | 0.74 (0.42–1.30) | 0.76 (0.43–1.33) | ||
| Live with parents? | < 0.05 | < 0.05 | |||||
| No | 101 | 15 | 14.9 | 2.24 (1.28–3.92) | 2.27 (1.26–4.10) | ||
| Yes | 573 | 38 | 6.6 | 1 | 1 | ||
| Mother’s schooling (years of study) | 0.278 | 0.191 | |||||
| ≥ 8 years | 464 | 40 | 8.6 | 1.39 (0.76–2.55) | 1.55 (0.81–2.97) | ||
| < 8 years | 210 | 13 | 6.2 | 1 | 1 | ||
| Paid activity? | 0.453 | 0.506 | |||||
| No | 560 | 46 | 8.2 | 1.34 (0.62–2.89) | 1.28 (0.62–2.66) | ||
| Yes | 114 | 7 | 6.1 | 1 | 1 | ||
| Household income | 0.793 | 0.732 | |||||
| Up to 1 minimum wage | 281 | 23 | 8.2 | 1.07 (0.64–1.81) | 1.10 (0.63–1.91) | ||
| More than 1 minimum wage | 393 | 30 | 7.6 | 1 | 1 | ||
| Religion | 0.205 | ||||||
| No | 89 | 10 | 11.2 | 1.53 (0.80–2.93) | 1.27 (0.64–2.51) | 0.495 | |
| Yes | 585 | 43 | 7.4 | 1 | 1 | ||
| Type of school | 0.266 | 0.279 | |||||
| Public | 436 | 38 | 8.7 | 1.38 (0.77–2.46) | 1.38 (0.77–2.50) | ||
| Private | 238 | 15 | 6.3 | 1 | 1 | ||
| School Year | |||||||
| HS Freshman | 222 | 25 | 11.3 | 0.71 (0.36–1.39) | 0.313 | 1.86 (0.86–4.03) | 0.117 |
| HS Sophomore | 242 | 17 | 7.0 | 1.74 (0.83–3.62) | 0.136 | 1.17 (0.53–2.58) | 0.701 |
| HS Junior | 210 | 11 | 5.2 | 1 | 1 | ||
| Victim of sexual violence | < 0.05f | < 0.05 | |||||
| Yes | 43 | 12 | 27.9 | 4.30 (2.44–7.55) | 3.40 (1.80–6.44) | ||
| No | 631 | 41 | 6.5 | 1 | 1 | ||
| Victim of physical violence | 0.123f | 0.22 | |||||
| Yes | 25 | 4 | 16.0 | 2.12 (0.83–5.41) | 1.96 (0.67–5.74) | ||
| No | 649 | 49 | 7.6 | 1 | 1 | ||
PR: prevalence ratio (Mantel-Haenszel method); 95%CI: 95% confidence interval; HS: high school
a adjusted PR for all independent variables (Poisson regression).
c chi-square test (95%CI).
b Poisson regression with robust variance (95%CI).
d Includes black and brown
e Includes white, yellow and indigenous people.
f Fisher’s exact test (95%CI).