Table 1.
Baseline characteristics of children rostered in EMRALD® and all Ontario children
| CHARACTERISTIC | ALL ROSTERED CHILDREN IN EMRALD* (N = 31 637), N (%) | ALL ONTARIO CHILDREN (N = 3 122 918), N (%) |
|---|---|---|
| Sex† | ||
| • Male | 16 052 (50.7) | 1 601 593 (51.3) |
| • Female | 15 582 (49.3) | 1 521 325 (48.7) |
| Age, y | ||
| • 0–4 | 8218 (26.0) | 727 088 (23.3) |
| • 5–9 | 7928 (25.1) | 747 225 (23.9) |
| • 10–14 | 7772 (24.6) | 779 141 (25.0) |
| • 15–19 | 7719 (24.4) | 869 464 (27.8) |
| Neighborhood income‡ | ||
| • 1—lowest quintile | 4838 (15.3) | 595 712 (19.1) |
| • 2 | 5597 (17.7) | 576 662 (18.5) |
| • 3 | 6480 (20.5) | 625 302 (20.0) |
| • 4 | 7231 (22.9) | 678 401 (21.7) |
| • 5—highest quintile | 7416 (23.4) | 634 259 (20.3) |
| • Unknown or missing | 75 (0.2) | 12 582 (0.4) |
| Rurality‡ | ||
| • Rural | 6058 (19.1) | 149 605 (4.8) |
| • Suburban | 9859 (31.2) | 467 531 (15.0) |
| • Urban | 15 720 (49.7) | 2 505 782 (80.2) |
EMRALD—Electronic Medical Record Administrative data Linked Database.
*
Administrative data on patient demographic characteristics were available for 31 637 of the 33 343 (94.9%) children in EMRALD.
†
Sex was not recorded for 3 children.
‡
Neighborhood income quintile and rurality were calculated by linking postal codes from the Registered Persons Database to 2006 Statistics Canada census data.