Table 2.

Summary of emergency department visit data for respiratory outcomes by city and age group

City	Period [# of days]	Total # of ED visits [Mean # of ED visits per day]
		RD	Asthma	URI	COPD
		ALL AGES
Atlanta	2002-2008 [2 557]	1 022 735 [400.0]	213 126 [83.4]	590 474 [230.9]	51 290 [20.1]
Birmingham	2002-2008 [2 557]	173 317 [67.8]	27 113 [10.6]	105 761 [41.4]	15 866 [6.2]
Dallas	2006-2008 [1 096]	490 826 [447.8]	82 798 [75.5]	282 866 [258.1]	24 614 [22.5]
Pittsburgh	2002-2008 [2 557]	264 558 [103.5]	64 828 [25.4]	111 811 [43.7]	27 183 [10.6]
St. Louis	2002-2007 [2 004]	572 494 [285.7]	102 460 [51.1]	331 837 [165.6]	31 361 [15.6]
		CHILDREN ≤ 18 YEARS
Atlanta	2002-2008 [2 557]	539 273 [210.9]	117 645 [46.0]	337 060 [131.8]	259 [0.10]
Birmingham	2002-2008 [2 557]	43 424 [17.0]	4 806 [1.9]	35 030 [13.7]	39 [0.02]
Dallas	2006-2008 [1 096]	272 523 [248.7]	46 687 [42.6]	170 144 [155.2]	41 [0.04]
Pittsburgh	2002-2008 [2 557]	109 417 [42.8]	29 881 [11.7]	57 484 [22.5]	44 [0.02]
St. Louis	2002-2007 [2 004]	254 743 [127.1]	55 677 [27.8]	155 357 [77.5]	123 [0.06]
		ADULTS >18 YEARS
Atlanta	2002-2008 [2 557]	483 256 [189.0]	95 448 [37.3]	253 301 [99.1]	51 017 [20.0]
Birmingham	2002-2008 [2 557]	124 238 [48.6]	21 058 [8.2]	66 885 [26.2]	15 539 [6.1]
Dallas	2006-2008 [1 096]	218 271 [199.2]	36 106 [32.9]	112 699 [102.8]	24 573 [22.4]
Pittsburgh	2002-2008 [2 557]	155 141 [60.7]	34 947 [13.7]	54 327 [21.2]	27 139 [10.6]
St. Louis	2002-2007 [2 004]	317 750 [158.6]	46 783 [23.3]	176 480 [88.1]	31 238 [15.6]

Abbreviations: RD, combined respiratory disease group; URI, upper respiratory tract infection; COPD, chronic obstructive pulmonary disease