Variable | Visit | Observed value | Change from visit 2 (baseline) | 95% confidence interval | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | N | Mean | SD | Min | Median | Max | N | Mean | SD | Min | Median | Max | Lower | Upper | |
FEV1 (L) | 2 | 862 | 1.964 | 0.759 | 0.40 | 1.830 | 5.06 | - | - | - | - | - | - | - | - |
 | 3 | 836 | 2.110 | 0.779 | 0.55 | 1.985 | 4.91 | 836 | 0.152 | 0.374 | −2.35 | 0.120 | 2.01 | 0.127 | 0.178 |
 | 5 | 805 | 2.160 | 0.767 | 0.52 | 2.060 | 5.15 | 805 | 0.199 | 0.393 | −2.32 | 0.160 | 2.31 | 0.172 | 0.227 |
 | Mean of 3 and 5 | 840 | 2.131 | 0.761 | 0.54 | 2.028 | 4.66 | 840 | 0.173 | 0.353 | −2.34 | 0.130 | 2.03 | 0.149 | 0.197 |