Table 5.

Negative binominal regression model, suicide within occupations with and without access to lethal means, controlling for potential confounders, by gender, 2001 to 2012

	Males					Females
	Suicide	Pop (‘000)	IRR	95% CI	p value	Suicide	Pop (‘000)	IRR	95% CI	p value
Occupations with access to lethal means
Yes	2125	912	1.24	1.16, 1.33	<0.001	314	426	3.02	2.60, 3.50	<0.001
No	6475	3900	1			1236	3700
Age group
70 yrs. +	81	52	1.90	1.48, 2.43	<0.001	4	23	5.49	2.02, 14.87	0.001
60–69 yrs	450	328	0.81	0.72, 0.92	0.001	61	193	1.71	1.30, 2.26	<0.001
50–59 yrs	1406	917	0.83	0.76, 0.91	<0.001	287	776	0.92	0.79, 1.08	0.326
40–49 yrs	2344	1146	1.08	0.99, 1.18	0.066	406	1042	0.89	0.77, 1.03	0.106
30–39 yrs	2303	1127	1.07	0.98, 1.17	0.118	442	930	1.09	0.94, 1.25	0.243
10–29 yrs	2016	958	1			350	869	1
Occ skill level
Labourers	1758	605	2.37	2.12, 2.64	<0.001	153	348	1.13	0.89, 1.43	0.319
Machine workers	1111	542	1.47	1.31, 1.64	<0.001	23	63	3.13	2.01, 4.88	<0.001
Sales workers	418	343	1.13	0.97, 1.30	0.107	153	553	1.09	0.86, 1.38	0.464
Clerical and Admin	331	317	0.82	0.70, 0.96	0.012	287	1049	0.81	0.65, 0.99	0.041
Community service	612	250	1.88	1.65, 2.13	<0.001	305	552	1.70	1.39, 2.09	<0.001
Technical and trade	2412	1116	1.59	1.43, 1.77	<0.001	94	193	1.80	1.38, 2.35	<0.001
Professionals	940	850	0.87	0.77, 0.98	0.026	401	956	0.80	0.66, 0.98	0.033
Managers	1018	789	1			134	414	1
Year	8600	4812	0.97	0.96, 0.98	<0.001	1550	4126	0.98	0.96, 0.99	<0.001

Notes: 95% CI Intervals 95% Confidence intervals (lower, upper), IRR incident rate ratio (suicides per 100,000 person-years), p value significance value at 95%; Occupations with access to lethal means can be seen in Table 1