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Table 4 Logistic regression analysis in junior high and high school children

From: Prevalence and associated factors of suicidality in Japanese adolescents: results from a population-based questionnaire survey

    Junior high school children      High school children   
Variables Crude OR 95%CI p value Adjusted ORa 95%CI p value Crude OR 95%CI p value Adjusted ORa 95%CI p value
Grade 0.99 0.95–1.04 0.685 1.00 0.95–1.06 0.972 1.04 0.98–1.10 0.192 1.03 0.96–1.09 0.461
Sex 1.75 1.62–1.89 <  0.001 1.61 1.47–1.77 <  0.001 1.42 1.29–1.57 <  0.001 1.67 1.48–1.88 <  0.001
Number of siblings 0.95 0.85–1.05 0.311 1.06 0.93–1.20 0.412 0.76 0.70–0.89 <  0.001 0.86 0.75–0.99 <  0.05
Number of friends 1.40 1.36–1.44 <  0.001 1.05 1.01–1.09 <  0.05 1.31 1.26–1.36 <  0.001 1.05 1.00–1.10 <  0.05
Happiness 2.00 1.92–2.07 <  0.001 1.51 1.44–1.58 <  0.001 1.93 1.85–2.02 <  0.001 1.48 1.40–1.57 <  0.001
Wellness 1.74 1.68–1.80 <  0.001 1.24 1.18–1.29 <  0.001 1.72 1.64–1.79 <  0.001 1.28 1.22–1.35 <  0.001
Loneliness 0.51 0.50–0.53 <  0.001 0.69 0.66–0.72 <  0.001 0.51 0.49–0.53 <  0.001 0.65 0.62–0.68 <  0.001
Talk with family 1.41 1.36–1.46 <  0.001 1.15 1.10–1.20 <  0.001 1.37 1.31–1.43 <  0.001 1.11 1.05–1.17 <  0.001
Experience of cyberbullying 6.45 4.74–8.78 <  0.001 3.05 2.12–4.39 <  0.001 5.58 4.03–7.73 <  0.001 3.64 2.51–5.30 <  0.001
Stressors about
 Relationship with friends 3.68 3.39–4.00 <  0.001 1.57 1.42–1.74 <  0.001 3.05 2.75–3.38 <  0.001 1.37 1.21–1.55 <  0.001
 School bullying 5.28 4.34–6.42 <  0.001 1.88 1.49–2.37 <  0.001 8.94 5.18–15.43 <  0.001 2.62 1.40–4.90 <  0.005
 Relationship with parents 4.97 4.39–5.63 <  0.001 2.10 1.81–2.44 <  0.001 4.20 3.62–4.87 <  0.001 2.12 1.78–2.53 <  0.001
 School records 1.79 1.65–1.93 <  0.001 1.24 1.13–1.37 <  0.001 1.56 1.43–1.71 <  0.001 1.20 1.07–1.34 <  0.005
 Relationship with opposite sex 3.02 2.69–3.39 <  0.001 1.82 1.58–2.09 <  0.001 2.07 1.81–2.36 <  0.001 1.35 1.15–1.59 <  0.001
 Sexual identity or intercourse 3.84 3.03–4.86 <  0.001 1.38 1.03–1.84 <  0.05 3.78 2.91–4.92 <  0.001 2.18 1.58–3.01 <  0.001
 Academic course 1.72 1.59–1.86 <  0.001 1.18 1.07–1.30 <  0.001 1.51 1.38–1.66 <  0.001 1.14 1.02–1.28 <  0.05
 Tobacco use 2.44 1.91–3.10 <  0.001 1.34 0.95–1.88 0.098 2.70 1.75–4.15 <  0.001 1.25 0.72–2.17 0.438
 Substance use 2.20 1.56–3.11 <  0.001 0.77 0.47–1.27 0.304 4.37 1.98–9.67 <  0.001 0.79 0.28–2.21 0.650
 Region 0.86 0.80–0.91 <  0.001 0.94 0.87–1.01 0.083 1.10 1.04–1.16 <  0.001 1.19 1.11–1.27 <  0.001
  1. OR odd ratio, a Multiple logistic regression analysis including all variables listed in this table