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Change in physiological measurements over the study period (n = 56) |
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| Baseline (sd) |
Follow up (sd) |
Annual change (95% confidence interval) p value |
|
|
|
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| FEV1 (L) |
1.89 (0.71) |
1.74 (0.68) |
-37.7 ml (-52.0 to -23.4), p < 0.001 |
| FEV1 (% predicted) |
76.8 (25.1) |
74.0 (27.3) |
-0.8 (-1.5 to 0.0), p < 0.05 |
| FVC (L) |
3.38 (0.88) |
3.26 (0.85) |
-28.9 ml (-50.4 to -7.3), p < 0.01 |
| FVC (% predicted) |
109.0 (19.3) |
111.0 (25.1) |
0.36 (-0.5 to 1.2), Not significant |
| FEV1/FVC (%) |
56.6 (0.17) |
53.6 (0.17) |
0.75 (0.40 to 1.1), p < 0.001 |
| TLCO (mmol/min/kpa) |
6.5 (2.4) |
5.8 (2.4) |
-0.15 (-0.21 to -0.09), p < 0.001 |
| TLCO (% predicted) |
81.8 (27.4) |
76.2 (27.3) |
-1.3 (-2.1 to -0.6), p < 0.001 |
| KCO (mmol/min/kpa/L) |
1.3 (0.4) |
1.2 (0.4) |
-0.02 (-0.03 to -0.01), p < 0.001 |
| KCO (% predicted) |
90.9 (31.6) |
85.0 (31.4) |
-1.4 (-2.1 to -0.7), p < 0.001 |
|
No change in static lung volume measurements was observed over the study period. sd = standard deviation. | |||
Parr et al. Respiratory Research 2006 7:136 doi:10.1186/1465-9921-7-136 |
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