Association between air pollution and suicide: a time series analysis in four Colombian cities

Table 3 Conditional Poisson regression models for suicides among four Colombian cities stratified by sex and age group, 2011–2014

Sex	Pollutant	Children				Adults				Older adults
		IRR	95% CI		p	IRR	95% CI		p	IRR	95% CI		p
Men	NO₂	1.08	0.79	1.47	0.62	0.98	0.93	1.03	0.45	1.04	0.90	1.21	0.57
	SO₂	0.70	0.53	1.04	0.16	0.99	0.98	1.00	0.39	1.00	0.82	1.35	0.68
	PM₁₀	0.89	0.67	1.19	0.44	0.99	0.94	1.04	0.72	1.04	0.92	1.18	0.53
	PM_2.5	0.97	0.76	1.23	0.79	1.00	0.96	1.04	0.96	1.14	1.02	1.28	0.02^a
	CO_max	1.00	0.98	1.03	0.62	1.00	1.00	1.00	0.45	1.00	0.99	1.01	0.57
	O₃	0.91	0.70	1.19	0.51	1.00	0.96	1.06	0.88	0.99	0.88	1.12	0.90
Women	NO₂	0.56	0.30	1.01	0.10	1.05	0.95	1.17	0.36	0.95	0.66	1.38	0.80
	SO₂	0.66	0.39	1.14	0.14	1.00	0.96	1.04	0.96	0.93	0.79	1.09	0.38
	PM₁₀	0.60	0.35	1.03	0.06	0.97	0.88	1.08	0.60	1.05	0.82	1.35	0.68
	PM_2.5	0.79	0.53	1.16	0.23	1.00	0.92	1.09	0.97	1.17	0.96	1.43	0.13
	CO_max	0.96	0.92	1.00	0.06	1.00	1.00	1.01	0.36	1.00	0.97	1.02	0.80
	O₃	1.21	0.73	1.99	0.45	0.99	0.90	1.09	0.83	0.97	0.76	1.25	0.84

For each pollutant the IRR are mean changes in the rates per increase in this 20% of the average (6 μg/m³ for NO₂, 2 μg/m³ for SO₂, 0.4 μg/m3 for CO and 10 μg/m³ for O₃). For PM₁₀ and PM_2.5, the values were centered by convention on 10 and 5 μg/m³, respectively
IRR incidence rate ratio, CI confidence interval
Estimates are adjusted for temperature, precipitation, humidity and holidays
^aNo significant considering Bonferroni correction

ISSN: 1476-069X