Table 2.
Characteristics of the included studies in the meta-analysis.
| Study | Group | No. initially randomized | No. accomplished the trial | Age | Prolong stay | Prophylactic analgesia | Cholangiogram | Discharge |
|---|---|---|---|---|---|---|---|---|
| Salleh et al. [39] | ||||||||
| DS | 31 | 29 | 49.8 (21-75) | 0% | Yes | Selectively | After 6 hours of postsurgical observation | |
| OS | 31 | 29 | 49.8 (21-75) | 0% | The following day after surgery | |||
| Kumar et al.[38] | ||||||||
| DS | 32 | 32 | 35.94 ± 12.4# | 3.1% | Yes | NA | After 6-8 hours of postsurgical observation | |
| OS | 33 | 33 | 42.72 ± 11.9# | NA | Stay more than one night | |||
| Barthelsson et al. [37] | ||||||||
| DS | 50 | 34 | 44 (22-68) | 0% | Yes | Routinely | After 5-6 hours of postsurgical observation | |
| OS | 50 | 39 | 45 (22-68) | NA | The next morning | |||
| Johansson et al. [36] | ||||||||
| DS | 54 | 52 | (18-70) | 7.7% | Yes | Routinely | After 4-8 hours of postsurgical observation | |
| OS | 53 | 48 | (18-70) | 12.5% | The following day after surgery | |||
| Curet et al. [35] | ||||||||
| DS | 43 | 43 | 33 (18-68)∗ | 14% | Yes | Selectively | After 4 hours of postsurgical observation | |
| OS | 37 | 37 | 43 (19-66)∗ | 5.4% | The following day after surgery | |||
| Young and O'Connell [34] | ||||||||
| DS | 14 | 14 | 39 (26-48) | 0% | NA | None | Within 8 hours after surgery | |
| OS | 14 | 14 | 40 (21-50) | 0% | 23 h postsurgery | |||
| Hollington et al. [33] | ||||||||
| DS | 74 | 60 | 45 (17-83) | 18.3% | NA | Routinely | The evening of the operation day with at least 4 h of postsurgical observation | |
| OS | 76 | 71 | 49 (17-83) | 18.3% | The following day after surgery | |||
| Keulemans et al. [32] | ||||||||
| DS | 40 | 37 | 39 (20-62) | 8.1% | Yes | Selectively | Discharged before 7 PM within the operation day | |
| OS | 40 | 37 | 48 (19-65) | NA | At least one-night stay after surgery | |||
DS: day surgery; OS: overnight stay; #mean ± standard deviation; NA: not available; ∗p < 0.05.