TABLE 1.
Characteristics of the study population# by sex
| Characteristic | Women | Men | Standardised difference¶ |
| Subjects | 131 628 | 77 426 | |
| Age group at asthma prevalence years | |||
| 47–59 | 43 245 (32.85) | 24 712 (31.92) | 0.020 |
| 60–69 | 52 023 (39.52) | 32 297 (41.71) | 0.045 |
| 70–99 | 36 360 (27.62) | 20 417 (26.37) | 0.028 |
| Age group at baseline+ years | |||
| 66–75 | 68 022 (51.68) | 41 609 (53.74) | 0.041 |
| 76–85 | 46 769 (35.53) | 28 384 (36.66) | 0.024 |
| 86–99 | 16 837 (12.79) | 7 433 (9.60) | 0.100 |
| Asthma duration years | 11.88±5.43 | 11.41±5.62 | 0.086 |
| Follow-up time years | 5.20±1.60 | 5.04±1.73 | 0.097 |
| Income quintile | |||
| 1 (lowest) | 28 790 (21.87) | 14 771 (19.08) | 0.069 |
| 2 | 28 197 (21.42) | 16 074 (20.76) | 0.016 |
| 3 | 25 904 (19.68) | 15 527 (20.05) | 0.009 |
| 4 | 24 845 (18.88) | 15 550 (20.08) | 0.031 |
| 5 (highest) | 23 385 (17.77) | 15 227 (19.67) | 0.049 |
| Missing | 507 (0.39) | 277 (0.36) | 0.005 |
| Rural | |||
| Yes | 15 065 (11.45) | 9951 (12.85) | 0.043 |
| No | 116 531 (88.53) | 67 455 (87.12) | 0.043 |
| Missing | 32 (0.02) | 20 (0.03) | 0.001 |
| Ontario Marginalization Index | |||
| Deprivation quintile | |||
| 1 (lowest) | 24 023 (18.25) | 15 166 (19.59) | 0.034 |
| 2 | 24 304 (18.46) | 15 019 (19.40) | 0.024 |
| 3 | 25 673 (19.50) | 15 392 (19.88) | 0.009 |
| 4 | 26 892 (20.43) | 15 418 (19.91) | 0.013 |
| 5 (highest) | 28 941 (21.99) | 15 523 (20.05) | 0.048 |
| Missing | 1795 (1.36) | 908 (1.17) | 0.017 |
| Dependency quintile | |||
| 1 (lowest) | 16 502 (12.54) | 10 472 (13.53) | 0.029 |
| 2 | 20 221 (15.36) | 13 107 (16.93) | 0.043 |
| 3 | 22 224 (16.88) | 13 891 (17.94) | 0.028 |
| 4 | 25 518 (19.39) | 15 609 (20.16) | 0.019 |
| 5 (highest) | 45 368 (34.47) | 23 439 (30.27) | 0.090 |
| Missing | 1795 (1.36) | 908 (1.17) | 0.017 |
| Ethnic concentration quintile | |||
| 1 (lowest) | 26 616 (20.22) | 15 876 (20.5) | 0.007 |
| 2 | 23 409 (17.78) | 13 928 (17.99) | 0.005 |
| 3 | 23 987 (18.22) | 13 710 (17.71) | 0.013 |
| 4 | 25 292 (19.21) | 14 510 (18.74) | 0.012 |
| 5 (highest) | 30 529 (23.19) | 18 494 (23.89) | 0.016 |
| Missing | 1795 (1.36) | 908 (1.17) | 0.017 |
| Residential instability quintile | |||
| 1 (lowest) | 17 104 (12.99) | 12 339 (15.94) | 0.084 |
| 2 | 20 979 (15.94) | 14 481 (18.70) | 0.073 |
| 3 | 24 155 (18.35) | 15 385 (19.87) | 0.039 |
| 4 | 27 165 (20.64) | 15 550 (20.08) | 0.014 |
| 5 (highest) | 40 430 (30.72) | 18 763 (24.23) | 0.150 |
| Missing | 1795 (1.36) | 908 (1.17) | 0.017 |
| Prevalence of other health conditions | |||
| COPD | 75 507 (57.36) | 50 895 (65.73) | 0.170 |
| Diabetes | 49 022 (37.24) | 32 845 (42.42) | 0.110 |
| Hypertension | 112 497 (85.47) | 64 136 (82.84) | 0.072 |
| Stroke | 39 887 (30.3) | 24 054 (31.07) | 0.017 |
| Congestive heart failure | 34 517 (26.22) | 22 578 (29.16) | 0.066 |
| Acute myocardial infarction | 9529 (7.24) | 9899 (12.79) | 0.190 |
| Lung cancer | 4272 (3.25) | 3315 (4.28) | 0.055 |
| Breast cancer | 10 435 (7.93) | 157 (0.2) | 0.400 |
| Other cancer | 17 814 (13.53) | 21 560 (27.85) | 0.360 |
| Number of CADGs | 5.62±2.07 | 5.74±2.07 | 0.056 |
| Died during follow-up | |||
| Yes | 27 487 (20.88) | 19 254 (24.87) | 0.095 |
| No | 104 141 (79.12) | 58 172 (75.13) | 0.095 |
| Cause of death | |||
| Diseases of the circulatory system | 7778 (28.3) | 5406 (28.08) | 0.005 |
| Neoplasms | 5938 (21.6) | 4849 (25.18) | 0.085 |
| Diseases of the respiratory system | 5125 (18.65) | 3882 (20.16) | 0.038 |
| Mental and behavioural disorders | 1888 (6.87) | 881 (4.58) | 0.099 |
| Diseases of the nervous system | 996 (3.62) | 578 (3.00) | 0.035 |
| Other | 5490 (19.97) | 3455 (17.94) | 0.052 |
| Missing | 272 (0.99) | 203 (1.05) | 0.006 |
Data are presented as n, n (%) or mean±sd, unless otherwise stated. CADGs: Collapsed Aggregated Diagnosis Groups. #: n=209 054; ¶: standardised difference of >0.1 generally considered different (shown in bold); +: 1 April 2010.