Table 1

Characteristics of community-dwelling older adults with dementia and matched* persons without dementia on 1 April 2007 and on 1 April 2013 in Ontario, Canada

Baseline characteristicsOn 1 April 2007On 1 April 2013 and remaining in community
Persons with
dementia
N=62 622
Persons without dementia*
N=62 622
Persons with
dementia
N=13 807
Persons without dementia*
N=31 274
Matching variables
Age (years)
 Mean (±SD)81.1±6.881.1±6.883.5±6.484.3±6.3
 Median (IQR)81 (76–86)81 (76–86)84 (79–88)85 (80–89)
Age group (years), n (%)
 65–7411 131 (17.8)11 131 (17.8)1300 (9.4)2223 (7.1)
 75–8431 462 (50.2)31 459 (50.2)6261 (45.3)13 285 (42.5)
 85+20 029 (32.0)20 032 (32.0)6246 (45.2)15 766 (50.4)
Sex, n (%)
 Female37 802 (60.4)37 802 (60.4)8185 (59.3)19 129 (61.2)
 Male24 820 (39.6)24 820 (39.6)5622 (40.7)12 145 (38.8)
Aggregated Diagnosis Groups (ADGs)
 Mean (±SD)8.89±3.898.89±3.898.08±4.048.09±3.77
 Median (IQR)9 (6–12)9 (6–12)8 (5–11)8 (5–11)
 Number of ADGs, n (%)
  0267 (0.4)267 (0.4)163 (1.2)230 (0.7)
  1–512 612 (20.1)12 612 (20.1)3818 (27.7)8022 (25.7)
  6–1028 872 (46.1)28 872 (46.1)5994 (43.4)14 932 (47.7)
  11+20 871 (33.3)20 871 (33.3)3832 (27.8)8090 (25.9)
Additional characteristics
Neighbourhood income quintile, n (%)
 Missing219 (0.3)167 (0.3)52 (0.4)111 (0.4)
 Q1: lowest quintile13 181 (21.0)12 918 (20.6)2651 (19.2)6139 (19.6)
 Q212 763 (20.4)13 294 (21.2)2820 (20.4)6458 (20.6)
 Q312 107 (19.3)12 026 (19.2)2697 (19.5)6146 (19.7)
 Q411 882 (19.0)11 661 (18.6)2762 (20.0)6099 (19.5)
 Q5: highest quintile12 470 (19.9)12 556 (20.1)2825 (20.5)6321 (20.2)
Rural, n (%)
 Yes7109 (11.4)8012 (12.8)1275 (9.2)3727 (11.9)
 No55 513 (88.6)54 610 (87.2)12 527 (90.7)27 529 (88.0)
Time since dementia first recorded in administrative data, in years
 Mean (±SD)2.79±2.678.79±2.67
 Median (IQR)2.03 (0.85–3.89)8.03 (6.85–9.89)
  • *Control group with no documented history of dementia on 1 April 2007 matched 1:1 on age, sex and Aggregated Diagnosis Groups (±2 ADGs).