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Comparison of fixed and random effects.
| Variables | N (study)a | Random-effect model (Pooled data, 95%CI) | Fixed-effect model (Pooled data, 95%CI) |
|---|---|---|---|
| Male | 15 | 0.959 (0.933,0.980) | 0.958 (0.940,0.973) |
| Age, year | 15 | 70.580 (69.646,71.515) | 71.443 (71.232,71.655) |
| KL-6, U/mL | 3 | 612.452 (521.022,703.881) | 633.067 (619.612,646.521) |
| FEV1, %pred | 7 | 81.604 (74.964,88.244) | 73.700 (72.780,74.619) |
| DLCO, %pred | 5 | 61.907 (54.251,69.564) | 54.027 (533.364,54.589) |
anumbers of studies included in the meta-analysis.
