Table 1. Characteristics of suicide and accidental death decedents with schizophrenia from China.

Characteristic	Accidental Control (N = 24)		Completed Suicide (N = 74)		Analysis
	Mean	SD	Mean	SD	t (df)	Adjusted pc
Age (years)	46.8	16.6	44.4	14.6	0.68 (96)	0.767
Age of onset of symptoms	28.6	12.4	33.5	12.6	-1.65 (96)	0.282
Duration of illness from onset to death (years)	18.3	13.1	10.9	12.2	2.50 (96)	0.066
Mean number of negative life events in last year	2.56	1.54	3.47	2.23	-1.84 (96)	0.200
Mean effect of negative life event in last year	37.65	38.72	77.66	58.37	-3.14 (96)	0.024
Mean overall quality of life in prior month (0-100)	42.13	14.13	44.16	10.85	-0.74 (96)	0.702
	N	%	N	%	χ2(df)	p
Female gender	9	37.5	22	29.7	0.50 (1)	0.672
Rural residence	16	66.7	50	68.0	0.01 (1)	0.999
Prior suicide attempts	0	0.0	28	37.8	12.71 (1)	0.021
Multiple episodes of depression	0	0.0	3	4.1	---	1.000 a
Had prior mental health treatment/admission	20	83.3	40	54.1	6.54 (1)	0.065
Had ever received treatment from psychiatrist	18	75.0	51	68.9	0.32 (1)	0.767
Used anti-psychotic in last month	11	45.8	41	55.4	0.67 (1)	0.695
Used antidepressant in last month	0	0.0	3	4.1	---	1.000a
Severity of illness in month before death
None	0	0.0	1	1.4	---	0.854 b
Mild	1	4.2	4	5.4
Moderate	5	20.8	23	31.1
Severe	18	75.0	46	62.2
Severe negative life event in 7 days prior to death	2	22.0	11	14.9	---	0.751 a
Family history of psychosis	3	12.5	10	13.5	---	1.000 a
Blood relative with history of depression	0	0.0	4	5.4	---	0.787 a

^aBased on Fisher's Exact Test

^bFreeman-Halton (1951) extension of the Fisher's Exact Test.

Note: Fisher's Exact Test used when expected frequency < 5.

^cAll p values were adjusted using the False Discovery Rate