Table 7.
Design of identification studies
| Author(s)
|
Design
|
Data source
|
Type of sampling
|
No eligible
|
Response rate
|
Justification for sample size
|
Health setting and population comparison
|
|---|---|---|---|---|---|---|---|
| Freund et al (1996)17 | Time series | Patient generated medical records | Consecutive | Screened 508, comparison 181 | Screened 98%, comparison 98% | No | Same type of setting and population: • Same site • Different samples (historical controls) |
| Thompson et al (2000)18 | Cluster randomised controlled trial | Medical records | Stratified random sampling | Screened 2962 (1372 post-protocol, 1590 pre-protocol), comparison 4225 (2020 post-protocol, 2205 pre-protocol) | Not applicable | Yes | Same type of setting and population: • Different sites • Different samples (parallel and historical controls) |
| Harwell et al (1998)19 | Time series | Medical records | Not clear | Screened 255, comparison 251 | Not applicable | Yes | Same type of settings and populations: • Same sites • Different samples (historical controls) |
| Olson et al (1996)20 | Time series | Medical records | Consecutive | Screened phase 1: 1444, screened phase 2: 1356, comparison: 1273 | Not applicable | No | Same type of setting and population: • Same site • Different samples (historical controls) |
| Roberts et al (1997)21 | Time series | Medical records (and patient completed questionnaires from separate studies) | Not clear | Screened 183, comparison 141 | Not applicable | No | Same type of setting and population: • Same site • Different samples (historical controls) |
| *Fanslow et al (1998)22 | Before and after parallel groups | Medical records | Random | Screened 4563 (2287 post-protocol, 2276 pre-protocol), comparison 3488 (1720 post-protocol, 1768 pre-protocol) | Not applicable | No | Same type of settings and populations: • Different sites • Different samples (parallel and historical controls) |
| *Fanslow et al (1999)23 | Before, after, and follow up parallel groups | Medical records | Random | 10 961 across all groups | Not applicable | No | Same type of settings and populations: • Different sites • Different samples (parallel and historical controls) |
| Morrison et al (2000)24 | Time series | Screened: interview; comparison: medical records | Screened: consecutive; comparison: random within stated time periods | Screened 302, comparison 1000 | Screened: 99%; comparison: not applicable | Yes | Same type of setting and population: • Same site • Different samples (historical controls) |
| Covington et al (1997)25 | Time series | Medical records | Consecutive | Screened 384, comparison 1056 | Not applicable | Yes | Same type of setting and population: • Same site • Different samples (historical controls) |
| Wiist and McFarlane (1999)26 | Before and after parallel groups | Medical records | Random | 540 post-protocol, 540 pre-protocol (across both screened and comparison groups) | Not applicable | Yes | Same type of settings and populations: • Different sites • Different samples (parallel and historical controls) |
*
Same study.