Table 4.

Risk factors of suicidal ideation among middle-aged adults

Characteristic	Category	Model II-1		Model II-2		Model II-3
		OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Demographic
Education	≤ Middle school	1.86 (1.19–2.92)	0.006	1.40 (0.88–2.21)	0.158	1.38 (0.87–2.21)	0.176
	High school	1.73 (1.14–2.63)	0.010	1.56 (1.02–2.38)	0.041	1.48 (0.97–2.27)	0.072
	≥ College	1.00		1.00		1.00
Marital status	Not married	1.11 (0.73–1.69)	0.618	1.01 (0.66–1.54)	0.978	1.05 (0.68–1.63)	0.814
	Married	1.00		1.00		1.00
Economic activity	No	1.34 (0.96–1.87)	0.083	1.12 (0.79–1.58)	0.518	1.14 (0.81–1.62)	0.457
	Yes	1.00		1.00		1.00
Household income	Low	2.81 (1.94–4.09)	< 0.001	2.60 (1.78–3.80)	< 0.001	2.11 (1.41–3.15)	< 0.001
	Middle	2.00 (1.36–2.96)	< 0.001	2.03 (1.37–3.01)	< 0.001	1.80 (1.20–2.69)	0.004
	High	1.00		1.00		1.00
Health related
Perceived health status	Poor			2.83 (1.49–5.36)	0.001	2.66 (1.40–5.05)	0.003
	Moderate			1.94 (1.19–3.15)	0.007	1.90 (1.17–3.09)	0.010
	Good			1.00		1.00
Subjective peer-compared health status	Poor			1.89 (1.01–3.50)	0.045	1.82 (0.98–3.37)	0.060
	Moderate			1.26 (0.78–2.03)	0.341	1.23 (0.77–1.99)	0.390
	Good			1.00		1.00
Sleep time (h): weekdays	< 6			1.17 (0.61–2.24)	0.646	1.14 (0.59–2.21)	0.688
	≥ 6			1.00		1.00
Sleep time (h): weekend	< 6			1.36 (0.78–2.38)	0.275	1.37 (0.79–2.40)	0.265
	≥ 6			1.00		1.00
Social perspective
Opportunity to success with effort	No					1.59 (1.17–2.17)	0.003
	Yes					1.00
Perceived social class	Lower					2.00 (0.70–5.75)	0.198
	Middle					1.35 (0.48–3.79)	0.565
	High					1.00

OR, odds ratio; CI, confidence interval.