Actual mean (SD) | Estimated mean (SD) | Z-score (p-value) | Mean difference (95 % CI) | Limits of agreement | Absolute difference (95 % CI) | |
---|---|---|---|---|---|---|
6 months (n = 7504) | 0.72 (0.28) | 0.74 (0.28) | 13.1 (<0.001) | −0.024 (-0.029, -0.019) | −0.498 to 0.450 | 0.154 (0.150, 0.158) |
12 months (n = 8722) | 0.75 (0.28) | 0.76 (0.28) | 7.6 (<0.001) | −0.012 (-0.017, -0.007) | −0.461 to 0.436 | 0.140 (0.138, 0.142] |