Study/Patient Characteristics Expanded Preoperative Evaluation
Randomized Clinical Trials
Table 1. Study and patient characteristics — randomized clinical trials.
| Characteristic [9 trials] |
Mean Med (Range) or N (%) |
|---|---|
| Patients enrolled | 234 201 (122 - 397) |
| Arms, N (%) | |
| 2 | 9 (100.0) |
| Pilot study, N (%) | 0 (0.0) |
| Ambulatory, N (%) | 0 (0.0) |
| Centers, N (%) | |
| 1 | 7 (77.8) |
| 2 | 1 (11.1) |
| 3 | 1 (11.1) |
| Country, N (%) | |
| Norway | 3 (33.3) |
| China | 1 (11.1) |
| Netherlands | 1 (11.1) |
| Spain | 1 (11.1) |
| Taiwan | 1 (11.1) |
| UK | 1 (11.1) |
| USA | 1 (11.1) |
| Low resource country, N (%) | 2 (22.2) |
| Funding, N (%) | |
| Public | 8 (88.9) |
| Not reported | 1 (11.1) |
| Author conflict of interest, N (%) | 1 (11.1) |
| Registered, N (%) | 4 (44.4) |
Surgery |
N = 9 |
|---|---|
| Procedure(s), N (%) | |
| Ortho | 6 (67) |
| Cardiac|Vasc | 1 (11) |
| GI/Abdominal | 1 (11) |
| Variousa | 1 (11) |
| a If reported as various/mixed or included more than 4 types of procedures. | |
| Characteristic | Na | Mean Med (Range) or N (%) |
|---|---|---|
| a N of the 9 studies reporting characteristic allowing description. | ||
Nonrandomized Studies
Table 2. Characteristics of nonrandomized studies.
| Characteristic [22 studies] |
Mean Med (Range) or N (%) |
|---|---|
| Patients enrolled | 690 254 (62 - 9,153) |
| Design, N (%) | |
| Before-After/Time Series | 18 (81.8) |
| Retrospective Cohort | 2 (9.1) |
| Nonrandomized Trial | 1 (4.5) |
| Prospective Cohort | 1 (4.5) |
| Arms, N (%) | |
| 2 | 21 (95.5) |
| 4 | 1 (4.5) |
| Pilot study, N (%) | 2 (9.1) |
| Ambulatory, N (%) | 0 (0.0) |
| Centers, N (%) | |
| 1 | 21 (95.5) |
| 2 | 1 (4.5) |
| Country, N (%) | |
| USA | 7 (31.8) |
| Netherlands | 5 (22.7) |
| Italy | 2 (9.1) |
| Sweden | 2 (9.1) |
| UK | 2 (9.1) |
| Belgium | 1 (4.5) |
| France | 1 (4.5) |
| Spain | 1 (4.5) |
| Switzerland | 1 (4.5) |
| Low resource country, N (%) | 0 (0.0) |
| Funding, N (%) | |
| Public | 10 (45.5) |
| None | 6 (27.3) |
| Not reported | 6 (27.3) |
| Author conflict of interest, N (%) | 3 (13.6) |
| Registered, N (%) | 1 (4.5) |
Surgery |
N = 22 |
|---|---|
| Procedure(s), N (%) | |
| Ortho | 6 (27) |
| GI/Abdominal | 5 (23) |
| Variousa | 4 (18) |
| Cardiac | 2 (9.1) |
| GI/Abdominal|General|Hepatic | 1 (4.5) |
| Gyn|General|Ortho | 1 (4.5) |
| Gyn|GI/Abdominal | 1 (4.5) |
| Neuro | 1 (4.5) |
| Urol | 1 (4.5) |
| a If reported as various/mixed or included more than 4 types of procedures. | |
| Characteristic | Na | Mean Med (Range) or N (%) |
|---|---|---|
| a N of the 22 studies reporting characteristic allowing description. | ||