Table 3.

Summary of ED visits that occurred during the summer months (June–August) of 2015–2019 in Anchorage, Fairbanks, and the Matanuska-Susitna Valley, Alaska, stratified by demographic variables.

Reason for ED visit	Total ED visits during study period	Sex		Age			Racea
		Female (%)	Male (%)	$<15$ y (%)	15–65 y (%)	$>65$ y (%)	Alaska Native (%)	Non-Alaska Native (%)	Unknown
Asthma [$n$ (%)]	2,911 (100)	1,651 (56.7)	1,260 (43.3)	523 (18.0)	2,217 (76.2)	171 (5.9)	920 (32.5)	1,907 (67.5)	84
COPD [$n$ (%)]	2,158 (100)	1,138 (52.7)	1,020 (47.3)	12 (0.6)	1,293 (59.9)	853 (39.5)	477 (22.7)	1,627 (77.3)	54
Pneumonia [$n$ (%)]	2,081 (100)	999 (48.0)	1,082 (52.0)	330 (15.9)	1,231 (59.2)	520 (25.0)	625 (31.3)	1,372 (68.7)	84
Bronchitis [$n$ (%)]	1,972 (100)	1,130 (57.3)	842 (42.7)	402 (20.3)	1,294 (65.7)	275 (13.9)	597 (31.5)	1,301 (68.5)	74
Arrhythmia [$n$ (%)]	1,617 (100)	676 (41.8)	941 (58.2)	14 (0.9)	879 (54.4)	724 (44.8)	222 (14.4)	1,325 (85.6)	70
Cerebrovascular [$n$ (%)]	434 (100)	207 (47.7)	227 (52.3)	0 (0)	211 (48.6)	223 (51.4)	62 (15.0)	350 (85.0)	22
Ischemia [$n$ (%)]	200 (100)	62 (31.0)	138 (69.0)	1 (0.5)	100 (50.0)	99 (49.5)	35 (18.3)	156 (81.7)	9
Myocardial infarction [$n$ (%)]	81 (100)	21 (25.9)	61 (74.1)	0 (0)	53 (65.4)	28 (34.6)	20 (26.7)	55 (73.3)	6
Heart failure [$n$ (%)]	441 (100)	162 (36.7)	279 (63.3)	1 (0.2)	241 (54.8)	199 (45.1)	135 (32.1)	286 (67.9)	20
Heat illness [$n$ (%)]	35 (100)	14 (40.0)	21 (60.0)	6 (17.1)	27 (77.1)	2 (5.7)	10 (30.3)	23 (69.7)	2

Note: COPD, chronic obstructive pulmonary disease; ED, emergency department.

^a Hospitalizations with “unknown” race were excluded from stratified analyses by race.