Follow-up Period | Separate Meta-analysis at Time-point Mean Difference [95% CI] | Multivariate Meta-analysis across Time-points Mean Difference [95% CI] |
---|---|---|
≤ 4 months | 1172 [815, 1528] | 1126 [787, 1466] |
Approximately 6 months | 1156 [672, 1641] | 1050 [602, 1498] |
1 year | 458 [277, 638] | 464 [301, 626] |
2 years | 66 [−92, 224] | 121 [−64, 306] |
3–4 years | 494 [251, 738] | 434 [191, 676] |