Association of PM2.5 concentration with health center outpatient visits for respiratory diseases of children under 5 years old in Lima, Peru

Table 3 Relationship between respiratory diseases with PM_2.5 quintiles in children under 5 years in Lima-Peru^a

Health center outpatients visits	Quintile	RR^aEXP	95% CI
ALRI < 2 m	I (< 15.64)	1
	II (15.64–17.48)	1.03	0.98	1 .56
	III (17.49–19.71)	1.04**	1.05	1.7
	IV (19.72–25.08)	1.06**	1.09	1.98
	V (25.09–48.62)	1.14**	1.77	3.72
ALRI 2-11 m	I (< 15.64)	1
	II (15.64–17.48)	1.05**	1.2	1.6
	III (17.49–19.71)	1.05**	1.21	1.64
	IV (19.72–25.08)	1.06**	1.26	1.82
	V (25.09–48.62)	1.13**	1.9	3.07
ALRI 1-4a	I (< 15.64)	1
	II (15.64–17.48)	1.04**	1.14	1.49
	III (17.49–19.71)	1.04**	1.15	1.53
	IV (19.72–25.08)	1.07**	1.31	1.88
	V (25.09–48.62)	1.14**	1.98	3.18
PNEU 2-11 m	I (< 15.64)	1
	II (15.64–17.48)	1.00	0.45	2.36
	III (17.49–19.71)	1.01	0.46	2.36
	IV (19.72–25.08)	1.12	0.85	5.74
	V (25.09–48.62)	1.32**	2.14	23.33
PNEU 1-4a	I (< 15.64)	1
	II (15.64–17.48)	1.04	0.74	2.36
	III (17.49–19.71)	1.13**	1.37	4.29
	IV (19.72–25.08)	1.14**	1.26	5.07
	V (25.09–48.62)	1.26**	2.19	12.52
Acute bronchiolitis /Asthma <2a	I (< 15.64)	1
	II (15.64–17.48)	1.07**	1.3	1.98
	III (17.49–19.71)	1.08**	1.41	2.19
	IV (19.72–25.08)	1.07**	1.27	2.19
	V (25.09–48.62)	1.19**	2.4	4.79
Acute bronchiolitis /Asthma 2-4a	I (< 15.64)	1
	II (15.64–17.48)	1.05**	1.11	1.71
	III (17.49–19.71)	1.06**	1.2	1.88
	IV (19.72–25.08)	1.07**	1.25	2.19
	V (25.09–48.62)	1.19	2.44	4.97

^aNegative binomial Model adjusted by temperature, relative humidity, season, year and districts. Bold values denote statistical significance. ALRI = Acute Lower Respiratory Infections. PNEU pneumonia, RR rate ratio, CI confidence interval. Average district-level PM2.5 during the same week (lag 0) was used as exposure.** = p < 0.05

ISSN: 1476-069X