Table 1.

Number of emergency department visits for selected respiratory disease indicator – October 1 to November 6, 2007.

	Pre-fire period*				Fire period*
	No. of visits	Mean per day	% visits	Peak no. of visits	Total no. of visits	Mean per day	% visits	Peak no. of visits	Excess no. of visits per day^	P-value§
Chief complaint
Cough	57	3.8	1.19	9	53	4.4	1.46	12	0.6	0.2766
Dyspnea	264	17.6	5.51	26	250	20.8	6.91	31	3.2	0.0105
Asthma	46	3.1	0.96	9	55	4.6	1.52	12	1.5	0.0211
Diagnosis codes
Respiratory syndrome	939	62.6	4.78	71	751	62.6	4.98	98	0	0.3963
Asthma	230	15.3	1.17	23	215	17.9	1.43	35	2.6	0.0377
Bronchitis	49	3.3	0.2	7	52	4.3	0.34	8	1.1	0.1034
COPD	153	10.2	3.2	18	115	9.6	3.2	13	−0.6	0.6236

COPD, chronic obstructive pulmonary disease

^*Pre-fire period includes the 15 weekdays during October 1-October 20, 2007.

⁺Fire period includes the 12 weekdays during October 21-November 6, 2007.

^{^}Mean number of visits during fire period minus mean number of visits during pre-fire period.

^§Loglinear models.