Lung function measurements in children - copsac

Figure 4: Center agreement study. Least squares mean for sRaw on 6 centers with 95% CI
(software versions are indicated in parenthesis).
sRaw at center no. 1 and 2 were significantly lower compared to the other 4 centers and
center no. 6 had significantly higher sRaw values than all the other centers. Mean sRaw
(SD) for all 6 centers was 0.88 kPa*s (0.23). The within-subject SD was 0.01 and
between-center SD for each child was 0.02. Observer and age of the child did not
significantly affect the measurements (p>0.5).
There were no significant difference between the sRaw results obtained by PP and the
local operator (table 1).
Table 1: Normative study: sRaw results obtained by PP and the local operator
Child
no
Center
no
1 2 3 4 5 6 7
PP
Local
operator
PP
Local
operator
PP
Local
operator
PP
Local
operator
PP
Local
operator
PP
Local
operator
PP
Local
operator
1 0.75 0.75 1.05 0.97 0.98 1.07 1.31 1.05 0.92 0.93 0.73 0.79 0.75 0.77
2 0.69 0.68 0.67 0.67 0.86 0.95 0.87 0.83 0.86 0.79 1.09 1.01 0.65 0.59
3 0.51 0.44 0.61 0.61 0.51 0.65 0.46 0.61 0.74 0.67 1.05 1.02 0.43 0.65
4 0.99 0.74 0.79 0.76 1.13 1.11 0.93 0.90 0.88 0.96 1.29 1.33 0.81 0.77
5 1.54 1.41 1.09 0.97 1.02 1.02 0.99 1.13 0.95 0.87 1.20 1.08 0.82 0.71
6 0.82 0.87 0.89 0.88 0.86 1.01 1.11 1.09 0.74 0.91 1.14 1.29 0.76 0.77
17