. 2021 May 20;16(5):e0251938. doi: 10.1371/journal.pone.0251938

Table 5. Evidence of mental ill health (MH), evidence of suicidal behaviours (SB) and their co-occurrence, by sex and ICD-10 code mechanism of cause of death in coastal environments X² (p value), Australia, 2005–2019.

Variable	Categories	Total (N = 666)		Sex					ICD-10 Code
		Total (N = 666)		Male (n = 473)		Female (n = 193)		Test statistic (P-value)	X80 (n = 289)		X71 (n = 204)		Other (n = 173)		Test statistic (P-value)
		N	%	N	%	N	%		N	%	N	%	N	%
Evidence of Mental ill health	Yes	409	61.4	275	67.2	134	32.8	χ² = 11.122 (p = 0.004)	182	44.5	122	29.8	105	25.7	χ² = 0.798 p = 0.939
	None	66	9.9	57	86.4	9	13.6		28	42.4	22	33.3	16	24.2
	Unknown	191	28.6	141	73.8	50	26.2		79	41.4	60	31.4	52	27.2
Evidence of suicidal behaviours	Yes	249	37.4	161	64.7	88	35.3	χ² = 8.967 (p = 0.011)	102	41.0	86	34.5	61	24.5	χ² = 3.068 p = 0.546
	None	96	14.4	76	79.2	20	20.8		45	46.9	26	27.1	25	26.0
	Unknown	321	48.1	236	73.5	85	26.5		142	44.2	92	28.7	87	27.1
Co-occurrence	MH only	43	6.5	32	74.7	11	25.6	χ² = 14.395 (p = 0.002)	23	53.5	8	18.6	12	27.9	χ² = 5.199 (p = 0.519)
	SB only	11	1.7	11	100.0	0	0		5	45.5	3	27.3	3	27.3
	MH + SB	225	33.8	140	62.2	85	37.8		91	40.4	80	35.6	54	24.0
	Neither	53	8.0	45	84.9	8	15.1		21	39.6	19	35.8	13	24.5
	Unknown*	334	50.2	245	73.4	89	26.6	*	149	44.2	95	28.2	93	27.6	*

Note: After Bonferroni adjustment, significance was deemed at p = 0.0125. Bold type indicates significance.

Table 5. Evidence of mental ill health (MH), evidence of suicidal behaviours (SB) and their co-occurrence, by sex and ICD-10 code mechanism of cause of death in coastal environments X2 (p value), Australia, 2005–2019.