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Table 3 Baseline characteristics of the 1,407,060 women in the study population who lived in Ontario’s metropolitan areas for the study period April 1, 2010-March 31, 2012 by age group

From: Breast cancer screening disparities among urban immigrants: a population-based study in Ontario, Canada

  Women aged 50–59 on April 1, 2010 Women aged 60–69 on April 1, 2010
(n = 738,240) (n = 688,820)
Value Identified Immigrants (CIC) Long-Term Residents (LTR) Recent Registrants (RR) P-Value Identified Immigrants (CIC) Long-Term Residents (LTR) Recent Registrants (RR) P-Value
Sociodemographic factors  
N 113,234 586,325 38681   70,098 573,725 24,997  
Mean age (SD) 55.09 ± 2.25 55.41 ± 2.29 55.13 ± 2.25 <.001 63.92 ± 2.83 64.14 ± 2.81 63.93 ± 2.81 <.001
Neighborhood income quintile, number (%)
1 28,275 (25.0 %) 91,910 (15.7 %) 7,360 (19.0 %) <.001 18,511 (26.4 %) 93,618 (16.3 %) 4,864 (19.5 %) <.001
2 26,111 (23.1 %) 108,645 (18.5 %) 7,242 (18.7 %)   16,365 (23.3 %) 108,803 (19.0 %) 4,700 (18.8 %)  
3 23,477 (20.7 %) 115,145 (19.6 %) 7,369 (19.1 %)   14,531 (20.7 %) 111,875 (19.5 %) 4,849 (19.4 %)  
4 20,729 (18.3 %) 128,266 (21.9 %) 8,021 (20.7 %)   12,254 (17.5 %) 122,618 (21.4 %) 5,175 (20.7 %)  
5 (highest) 14,417 (12.7 %) 140,152 (23.9 %) 8,515 (22.0 %)   8,305 (11.8 %) 134,787 (23.5 %) 5,293 (21.2 %)  
Missing 225 (0.2 %) 2,207 (0.4 %) 174 (0.4 %)   132 (0.2 %) 2,024 (0.4 %) 116 (0.5 %)  
Health care-related factors
RUBSa (Categories)
0–1 9,497 (8.4 %) 48,454 (8.3 %) 4,932 (12.8 %) <.001 5,486 (7.8 %) 32,847 (5.7 %) 3,000 (12.0 %) <.001
2 12,925 (11.4 %) 78,814 (13.4 %) 5,014 (13.0 %)   6,372 (9.1 %) 57,185 (10.0 %) 2,503 (10.0 %)  
3 70,280 (62.1 %) 345,365 (58.9 %) 21,848 (56.5 %)   42,726 (61.0 %) 337,310 (58.8 %) 13,843 (55.4 %)  
4+ 20,532 (18.1 %) 113,692 (19.4 %) 6,887 (17.8 %)   15,514 (22.1 %) 146,383 (25.5 %) 5,651 (22.6 %)  
ADGb
Mean ± SD 5.99 ± 3.48 5.76 ± 3.50 5.49 ± 3.65 <.001 6.19 ± 3.63 6.33 ± 3.62 5.84 ± 3.84 <.001
Median (IQR) 6 (3–8) 5 (3–8) 5 (3–8) <.001 6 (4–9) 6 (4–9) 6 (3–8) <.001
ADG (Categories)
0 6,643 (5.8 %) 26,788 (4.4 %) 3,733 (9.4 %) <.001 4,401 (6.3 %) 19,600 (3.4 %) 2,456 (9.8 %) <.001
1–5 46,562 (40.3 %) 277,514 (46.1 %) 16,922 (42.8 %)   27,045 (38.6 %) 236,864 (41.3 %) 9,695 (38.8 %)  
6–9 43,307 (37.5 %) 206,960 (34.4 %) 13,058 (33.0 %)   25,690 (36.6 %) 208,421 (36.3 %) 8,549 (34.2 %)  
10+ 18,985 (16.4 %) 90,955 (15.1 %) 5,802 (14.7 %)   12,962 (18.5 %) 108,840 (19.0 %) 4,297 (17.2 %)  
Periodic health exam)
Yes 66,273 (58.5 %) 309,149 (52.7 %) 19,684 (50.9 %)   39,102 (55.8 %) 305,656 (53.3 %) 12,450 (49.8 %) <.001
GP visits
Mean ± SD 5.07 ± 4.99 4.09 ± 5.14 4.08 ± 5.08 <.001 5.65 ± 5.22 4.54 ± 4.82 4.28 ± 4.93 <.001
Median (IQR) 4 (2–7) 3 (1–5) 3 (1–6) <.001 5 (2–8) 3 (2–6) 3 (1–6) <.001
Enrollment model
FHG/CCM 62,820 (55.5 %) 186,247 (31.8 %) 15,594 (40.3 %) <.001 40,367 (57.6 %) 179,728 (31.3 %) 9,374 (37.5 %) <.001
FHN 64 (0.1 %) 4,027 (0.7 %) 94 (0.2 %)   43 (0.1 %) 3,959 (0.7 %) 81 (0.3 %)  
FHO 25,369 (22.4 %) 188,473 (32.1 %) 10,143 (26.2 %)   14,695 (21.0 %) 187,145 (32.6 %) 6,904 (27.6 %)  
FHT 8,136 (7.2 %) 134,474 (22.9 %) 5,809 (15.0 %)   4,332 (6.2 %) 133,297 (23.2 %) 4,082 (16.3 %)  
No-Care 4,757 (4.2 %) 21,964 (3.7 %) 3,186 (8.2 %)   3,057 (4.4 %) 18,868 (3.3 %) 2,175 (8.7 %)  
No-Group 11,510 (10.2 %) 36,318 (6.2 %) 3,160 (8.2 %)   7,212 (10.3 %) 36,249 (6.3 %) 1,887 (7.5 %)  
Other 578 (0.5 %) 14,822 (2.5 %) 695 (1.8 %)   392 (0.6 %) 14,479 (2.5 %) 494 (2.0 %)  
Physician sex
Female 42,281 (37.3 %) 233,124 (39.8 %) 15,633 (40.4 %)   24,281 (34.6 %) 209,758 (36.6 %) 9,388 (37.6 %) <.001
Male 65,832 (58.1 %) 326,954 (55.8 %) 19,504 (50.4 %)   42,577 (60.7 %) 340,791 (59.4 %) 13,202 (52.8 %)  
Physician training
Domestic 59,139 (52.2 %) 469,827 (80.1 %) 24,896 (64.4 %) <.001 33,830 (48.3 %) 458,160 (79.9 %) 16,314 (65.3 %) <.001
International 48,779 (43.1 %) 89,374 (15.2 %) 10,118 (26.2 %)   32,893 (46.9 %) 91,453 (15.9 %) 6,192 (24.8 %)  
  1. aRUB = Resource Utilization Bands are part of the Johns Hopkins Adjusted Clinical Group® (ACG®) Case Mix System. The RUBs are used to categorize patients based on their expected use of health care resources and range from 0 (lowest expected health care costs) to 5 (highest expected health care costs)
  2. bADG = Aggregated Diagnosis Groups are part of the Johns Hopkins Adjusted Clinical Group® (ACG®) case-mix system. The ADGs are used to measure the level of co-morbidity and range from 0 (no diagnosis group) to 32 (32 distinct diagnosis groups)