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Table 1 Demographic and comorbidity characteristics of emergency department cohorts in 2010 and 2015

From: The receipt of information by family physicians about their patient’s emergency department visits: a record linkage study of electronic medical records to health administrative data

  2010 2015
Patients with a Single ED visit (N = 19,659) Patients with Multiple ED visits (N = 6950) Patients with a Single ED visit (N = 37,182) Patients with Multiple ED
visits (N = 13,359)
Sex
 Female 11,150 (56.7%) 4107 (59.1%)* 20,670 (55.6%) 7599 (56.9%)
 Male 8509 (43.3%) 2843 (40.9%) 16,512 (44.4%) 5760 (43.1%)
Age (Mean ± SD) 48.36 ± 18.08 48.83 ± 19.44 49.78 ± 19.05 52.24 ± 20.82*
Age Group (in years)
 18 to 24 2277 (11.6%) 941 (13.5%)* 3965 (10.7%) 1558 (11.7%)*
 25 to 44 6203 (31.6%) 2071 (29.8%) 11,583 (31.2%) 3591 (26.9%)
 45 to 64 7150 (36.4%) 2261 (32.5%) 12,574 (33.8%) 4026 (30.1%)
 65 to 84 3644 (18.5%) 1482 (21.3%) 7704 (20.7%) 3352 (25.1%)
 85+ 385 (2.0%) 195 (2.8%) 1356 (3.6%) 832 (6.2%)
Neighbourhood Income Quintile
 1 – Lowest 3446 (17.5%) 1590 (22.9%)* 6913 (18.6%) 3251 (24.3%)*
 2 3855 (19.6%) 1441 (20.7%) 7143 (19.2%) 2726 (20.4%)
 3 4033 (20.5%) 1456 (20.9%) 7213 (19.4%) 2521 (18.9%)
 4 4175 (21.2%) 1289 (18.5%) 7673 (20.6%) 2413 (18.1%)
 5 - Highest 4081 (20.8%) 1138 (16.4%) 8062 (21.7%) 2376 (17.8%)
Rurality
 Major Urban 8370 (42.6%) 2028 (29.2%)* 20,343 (54.7%) 6035 (45.2%)*
 Small Urban 8316 (42.3%) 3026 (43.5%) 12,213 (32.8%) 4612 (34.5%)
 Rural 2973 (15.1%) 1896 (27.3%) 4626 (12.4%) 2712 (20.3%)
Comorbidity (ADG Groups)
 0–4 (lower) 10,630 (54.1%) 2423 (34.9%)* 19,499 (52.4%) 4311 (32.3%)*
 5–9 8137 (41.4%) 3721 (53.5%) 15,630 (42.0%) 6933 (51.9%)
 10+ (higher) 902 (4.6%) 806 (11.6%) 2053 (5.5%) 2115 (15.8%)
Chronic Disease Cohort
 Post AMI 390 (2.0%) 71 (1.0%)* 827 (2.2%) 119 (0.9%)*
 Asthma 3095 (15.7%) 1040 (15.0%) 6212 (16.7%) 1845 (13.8%)*
 CHF 457 (2.3%) 66 (0.9%)* 1211 (3.3%) 108 (0.8%)*
 COPD 1721 (8.8%) 381 (5.5%)* 3833 (10.3%) 705 (5.3%)*
 Diabetes 2251 (11.5%) 432 (6.2%)* 4860 (13.1%) 743 (5.6%)*
 Hypertension 5524 (28.1%) 1233 (17.7%)* 10,812 (29.1%) 2178 (16.3%)*
 Mental Health 14,524 (73.9%) 3956 (56.9%)* 28,428 (76.5%) 7219 (54.0%)*
  1. *p < 0.001
  2. ADG Adjusted Diagnostic Group, Post AMI Post acute myocardial infarction, CHF Congestive Heart Failure, COPD Chronic obstructive pulmonary disease