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Table 2 Emergency Care Visit Characteristicsa

From: First Nations emergency care in Alberta: descriptive results of a retrospective cohort study

Variable FN n = 1,099,424 Non-FN n = 10,586,863
Number of unique patients 145,508 4.8 2,878,983 95.2
ED visits per patient (over study period)
 Median [IQR] 4 [2, 9] 2 [1, 4]
Sex, n %b
 Female 596,248 54.2 5,384,233 50.9
 Male 503,173 45.8 5,202,606 49.1
Agec
 Mean (SD) 31.4 (20.2) 38.4 (24.3)
 Median [IQR] 30 [17.0 46.0] 36 [20.0 57.0]
 Missing, n % 6 0.0 35 0.0
Visit Day, n %
 Monday-Friday 791,898 72.0 7,629,544 72.1
 Saturday-Sunday 307,526 28.0 2,957,319 27.9
Visit Time, n %
 8:01–16:00 488,736 44.5 5,320,816 50.3
 16:01–00:00 479,531 43.6 4,029,075 38.1
 00:01–08:00 113,157 11.9 1,236,972 11.7
Ambulance arrival, n (%)
 Arrive by Ambulance – Air 1325 0.1 5738 0.1
 Arrive by Ambulance – Ground 168,553 15.3 1,056,100 10.0
 Arrive by Ambulance – Combined 3586 0.3 4446 0.0
 Not Admitted by Ambulance 925,960 84.2 9,520,579 89.9
Triage level, n (%)
 CTAS 1 – Resuscitation 5284 0.5 45,625 0.4
 CTAS 2- Emergent 86,155 7.8 1,208,333 11.4
 CTAS 3 – Urgent 306,481 27.9 3,649,685 34.5
 CTAS 4 – Less Urgent 446,945 40.7 4,031,673 38.1
 CTAS 5 – Non-Urgent 201,399 18.3 1304,155 12.3
 No CTAS Assigned 53,160 4.8 347,392 3.3
Charlson Comorbidity Index Score n (%)
 0 766,450 69.7 7,914,320 74.8
 1 190,737 17.3 1,425,386 13.5
 2 61,119 5.6 524,217 5.0
 3 29,075 2.6 270,587 2.6
 4 16,946 1.5 152,535 1.4
 5 9363 0.9 84,064 0.8
 6 8310 0.8 55,799 0.5
 7 or higher 17,424 1.6 159,955 1.5
Episode Disease Category Groups (top 10 by FN count) n %
 Infection 203,045 18.5 1,652,620 15.6
 Trauma and Injury 186,562 17.0 2,053,672 19.4
 Unspecific Signs, Symptoms, and Findings 125,594 11.4 1,113,140 10.5
 Gastrointestinal Conditions 97,940 8.9 1,111,655 10.5
 Respiratory Conditions 56,044 5.1 491,546 4.6
 Cancer 49,551 4.5 454,915 4.3
 Substance Misuse/Addictions 43,895 4.0 97,682 0.9
 Breast, Obstetrics and Gynecology 38,857 3.5 299,619 2.8
 Musculoskeletal and Arthritis Conditions 34,030 3.1 399,884 3.8
 Mental Health 31,938 2.9 245,230 2.3
Disposition n %
 Discharged 934,194 85.0 9,167,120 86.6
 Admitted 70,295 6.4 833,609 7.9
 Transferred 20,249 1.8 191,180 1.8
 Left Without Being Seen 48,690 4.4 290,468 2.7
 Left Against Medical Advice 25,540 2.3 97,877 0.9
 Deceased 456 0.0 6609 0.1
  1. FN First Nations, non-FN non-First Nations, ED Emergency Department, IQR interquartile range, SD standard deviation, CTAS Canadian Triage Acuity Score
  2. aAll difference between FN and non-FN are significant at the p = < 0.001 level with one exception. Visit day is not significantly different (p = 0.40)
  3. b< 30 additional visits by FN and non-FN patients had the sex of the patient recorded as “Other.” The low number may be due to inconsistent use of this category rather than a reflection of the population
  4. cPatient age in years as calculated at admission. Ages> 110 were recoded as missing