Table 2.
Age distribution of study population and patients in trial
| Age group (years)* | No (%) of registered patients in study population (n=97 229)† | Total No (%) of calls during the trial (n=14 492) | No (%) of calls in intervention group (n=7184) | No (%) of calls in control group (n=7308) |
|---|---|---|---|---|
| <1 | 476 (1) | 1205 (8) | 623 (9) | 582 (8) |
| -4 | 5 162 (5) | 2361 (16) | 1137 (16) | 1224 (17) |
| -14 | 12 020 (12) | 1693 (12) | 877 (12) | 816 (11) |
| -24 | 10 557 (11) | 1399 (10) | 707 (10) | 692 (9) |
| -34 | 14 293 (15) | 1744 (12) | 840 (12) | 904 (12) |
| -44 | 13 676 (14) | 1225 (8) | 604 (9) | 621 (9) |
| -54 | 13 144 (13) | 1035 (7) | 520 (7) | 515 (7) |
| -64 | 10 004 (10) | 731 (5) | 362 (5) | 369 (5) |
| -74 | 8 903 (9) | 1000 (7) | 489 (7) | 511 (7) |
| ⩾75 | 8 614 (9) | 1825 (13) | 892 (13) | 933 (13) |
| Unknown | 380 (0.4) | 274 (2) | 133 (0.5) | 141 (2) |
*
On date of call. †Calculated at midpoint of trial year (22 July 1997).