Table 1.
Baseline characteristics of included studies.
| Author and year | Study design | Number of patients (male/female) | Patient age (years) | Follow-up time (month) | |||
|---|---|---|---|---|---|---|---|
| PELD | OLD | PELD | OLD | PELD | OLD | ||
| Jeong (2006) | Non-randomized retrospective comparative | 22(14/8) | 25(16/9) | 56.45±10.89 | 56±9.12 | 12 | 12 |
|
| |||||||
| Lee (2006) | Non-randomized retrospective comparative | 30(22/8) | 30(22/8) | 39.3(22-67) | 39.6(20-64) | 38.2(32-45) | 36.8(35-42) |
|
| |||||||
| Kim (2007) | Non-randomized retrospective comparative | 295(188/107) | 607(392/215) | 34.9(13-83) | 44.4(17-80) | 23.6(18-36) | 23.6(18-36) |
|
| |||||||
| Lee (2009) | Non-randomized retrospective comparative | 25(16/9) | 29(22/7) | 42.0±11.4 | 47.7±12.2 | 34.0±4.4 | 34.3±4.6 |
|
| |||||||
| Ahn (2016) | retrospective cohort | 32(32/0) | 34(34/0) | 22.41±1.68 | 22.18±1.51 | 13.69±1.26 | 13.41±1.02 |
|
| |||||||
| Choi (2016) | retrospective cohort | 20(14/6) | 23(13/10) | 33.9±11.1 | 38±11.6 | 27.5±5.7 | 27.5±5.7 |
|
| |||||||
| Lee (2017) | Non-randomized retrospective comparative | 35(25/10) | 48(30/18) | 50.20±12.87 | 50.13±11.56 | 24.17±11.83 | 23.65±7.94 |