Annals of Occupational and Environmental Medicine

Table 4 Linear regression analysis of the relationship between PM10 concentration and Visit Index^b

From: Spatial analysis between particulate matter and emergency room visits for conjunctivitis and keratitis

	Unadjusted		Adjusted^c
	Coefficient	95% CI	Coefficient	95% CI
Conjunctivitis	0.040^a	0.005–0.074	0.044^a	0.001–0.088
Keratitis	0.089^a	0.016–0.163	0.104^a	0.010–0.198

Abbreviations: CI confidence interval
^ap-value < 0.05
^bVisit Index – number of patients with conjuctivitis or keratitis / number of all patients × 1000
^cAdjusted for SO2, NO2, O3 and CO

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ISSN: 2052-4374

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