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Table 1 Characteristics of adult (age ≥ 18 years) CCHS survey respondents linked to health administrative data: 2005 to 2011/12

From: Income inequalities in multimorbidity prevalence in Ontario, Canada: a decomposition analysis of linked survey and health administrative data

Variable CCHS 2005 CCHS 2007–08 CCHS 2009–10 CCHS 2011/12
Total N: 28,412 29,632 28,388 27,195
Prevalent Multimorbidity: 9168 (26.4%) 11,156 (30.3%) 11,255 (31.7%) 11,390 (33.5%)
Age Group (years)
 18–34 7324 (29.6%) 6563 (29.0%) 6471 (28.8%) 5988 (28.8%)
 35–49 7417 (32.4%) 7311 (30.3%) 6323 (29.2%) 5557 (27.2%)
 50–64 7046 (22.2%) 8152 (24.4%) 7790 (25.3%) 7706 (26.4%)
 65–74 3645 (9.1%) 4132 (9.4%) 4177 (9.3%) 4452 (10.1%)
 75+ 2980 (6.7%) 3474 (6.9%) 3627 (7.5%) 3492 (7.4%)
Sex
 Women 15,322 (51.2%) 15,960 (51.2%) 15,565 (51.3%) 14,965 (51.4%)
 Men 13,090 (48.8%) 13,672 (48.8%) 12,823 (48.7%) 12,230 (48.6%)
Marital Status
 Other (Divorced, separated, widowed or single) 12,331 (35.4%) 12,537 (35.9%) 12,357 (36.6%) 12,150 (37.8%)
 Married or common-law 16,081 (64.6%) 17,095 (64.1%) 16,031 (63.4%) 15,045 (62.2%)
Immigrant
 Born in Canada 22,691 (68.7%) 23,322 (67.0%) 22,460 (66.2%) 21,739 (67.6%)
 Not born in Canada 5721 (31.3%) 6310 (33.0%) 5928 (33.8%) 5456 (32.4%)
Rurality
 Urban (RIO < 10) 14,877 (71.8%) 15,734 (72.2%) 15,057 (72.2%) 14,342 (72.6%)
 Suburban (RIO 10–39) 8664 (20.3%) 9276 (19.7%) 8724 (20.3%) 8342 (19.7%)
 Rural (RIO > 40) 4871 (7.9%) 4622 (8.0%) 4607 (7.5%) 4511 (7.7%)
Income (provincial quintile)
 Q1 (Low) 5617 (18.6%) 5190 (18.3%) 5079 (18.7%) 4460 (17.9%)
 Q2 5719 (19.8%) 5793 (19.2%) 5431 (19.0%) 5140 (19.1%)
 Q3 5305 (19.8%) 5700 (19.8%) 5749 (20.7%) 5825 (19.4%)
 Q4 5776 (20.7%) 6385 (21.3%) 6005 (20.3%) 5648 (21.6%)
 Q5 (High) 5995 (21.2%) 6564 (21.3%) 6124 (21.3%) 6122 (21.9%)
Education (Individual)
 No Post-Secondary Education 10,488 (32.4%) 10,612 (31.8%) 9893 (30.3%) 9651 (30.1%)
 At least Some Post-Secondary Education 17,924 (67.6%) 19,020 (68.2%) 18,495 (69.7%) 17,544 (69.9%)
Physical Activity
 Active 7471 (26.0%) 7284 (23.7%) 7464 (26.4%) 7729 (28.1%)
 Moderately Active 7249 (25.1%) 7500 (24.7%) 7189 (24.4%) 7099 (25.8%)
 Inactive 13,692 (49.0%) 14,848 (51.6%) 13,735 (49.2%) 12,367 (46.1%)
Smoker
 Heavy smoker (At least 1 pack per day) 2233 (6.4%) 2079 (5.9%) 1809 (5.1%) 1619 (4.7%)
 Light smoker (less than 1 pack per day) 4723 (16.4%) 4540 (15.9%) 4116 (14.8%) 3987 (15.5%)
 Former smoker 7799 (24.2%) 8264 (23.0%) 7635 (21.7%) 7554 (22.6%)
 Non-smoker 13,657 (53.1%) 14,749 (55.2%) 14,828 (58.4%) 14,035 (57.1%)
Body-Mass Index (BMI)
 Underweight (BMI < 18.5 kg/m2) 679 (2.8%) 652 (2.8%) 603 (2.6%) 625 (2.6%)
 Normal weight (BMI 18.5–24.9 kg/m2) 12,558 (47.4%) 12,405 (45.3%) 11,888 (45.4%) 11,250 (44.7%)
 Overweight (BMI 25–29.9 kg/m2) 9915 (34.0%) 10,530 (34.8%) 9955 (34.0%) 9486 (34.2%)
 Obese (BMI > 30 kg/m2) 5260 (15.8%) 6045 (17.2%) 5942 (18.0%) 5834 (18.5%)
Local Health Integration Network (LHIN)
 Erie St. Clair 2102 (5.0%) 1985 (5.0%) 2030 (4.9%) 1933 (4.8%)
 South West 3706 (7.4%) 3631 (7.3%) 3588 (7.0%) 3282 (7.4%)
 Waterloo-Wellington 1709 (5.4%) 1715 (5.4%) 1729 (5.6%) 1570 (5.7%)
 Hamilton Niagara Haldimand Brant (HNHB) 3642 (11.0%) 3404 (10.5%) 3380 (11.0%) 3284 (10.7%)
 Central West 862 (5.9%) 1296 (7.3%) 1210 (5.8%) 1143 (5.8%)
 Mississauga Halton 1378 (8.9%) 1437 (8.6%) 1369 (8.7%) 1410 (9.4%)
 Toronto Central 1058 (9.7%) 1377 (9.0%) 1177 (9.2%) 1127 (9.7%)
 Central 1632 (11.8%) 1779 (12.6%) 1657 (13.0%) 1487 (13.0%)
 Central East 2759 (12.2%) 2904 (11.7%) 2537 (12.0%) 2471 (11.3%)
 South East 1894 (3.9%) 1846 (3.8%) 1842 (3.8%) 1759 (3.7%)
 Champlain 2853 (9.4%) 2814 (9.2%) 2753 (9.4%) 2784 (9.4%)
 North Simcoe Muskoka 1059 (3.2%) 1448 (3.5%) 1310 (3.5%) 1287 (3.3%)
 North East 2727 (4.5%) 2677 (4.5%) 2455 (4.3%) 2365 (4.2%)
 North West 1031 (1.8%) 1319 (1.6%) 1351 (1.6%) 1293 (1.6%)
Primary Care Model Affiliation
 Family Health Group (FHG) 7068 (23.6%) 11,616 (42.7%) 7765 (35.0%) 5648 (27.7%)
 Family Health Network (FHN) 2160 (5.3%) 4244 (9.2%) 1957 (4.0%) 1279 (2.4%)
 Family Health Organization (FHO) 1026 (3.3%) 3414 (10.4%) 10,566 (30.6%) 13,292 (42.1%)
 Not Enrolled 18,035 (67.3%) 8510 (33.1%) 6114 (24.9%) 5253 (23.2%)
 Other Model 123 (0.4%) 1848 (4.6%) 1986 (5.5%) 1723 (4.6%)
Concentration Indexa − 0.114* − 0.114* − 0.111* − 0.085*
(95% Confidence Interval) (−0.132, − 0.096) (− 0.133, − 0.094) (−0.132, − 0.089) (−0.108, − 0.062)
  1. *p < 0.05
  2. aConcentration Index, Erreygers-corrected