Background
Methods
CAMPHOR Activity Limitation
Samples
Design
Results
e-sample (n = 147) |
pp1 (n = 147) |
pp2 (n = 147) | |
---|---|---|---|
Gender (%) | |||
Male | 23 (16) | 20 (14) | 57 (40.4) |
Female | 121 (84) | 123 (84) | 84 (59.6) |
Age (years) | |||
Mean (SD) | 51.7 (13.9) | 50.0 (14.6) | 55.5 (12.7) |
Range | 20.0–82.0 | 16.0–82.0 | 21.0–93.0 |
PH duration (years) | |||
Mean (SD) | 4.7 (3.8) | 12.1 (4.9) | 4.3 (4.0) |
Range | 0.0–19.0 | 7.0–29.0 | 3.0–21.0 |
6MWT (metres) | |||
Mean (SD) | - | 385.6 (112.6) | 396.7 (170.1) |
Range | - | 155.0–701.0 | 55.0–862.0 |
WHO classification (%) | |||
I | - | 4 (2.9) | 132 (95) |
II | - | 58 (42.3) | 2 (1.4) |
III | - | 73 (53.3) | 4 (2.9) |
IV | - | 2 (1.5) | 0 (0) |
V | - | 0 (0) | 1 (0.7) |
PH type (%) | |||
Idiopathic PH/Familial PH | 68 (46.3) | 81 (55.1) | 67 (45.6) |
Associated PH | 17 (11.6) | 62 (42.2) | 65 (44.2) |
PH due to left heart disease | 9 (6.1) | 0 (0) | 2 (1.4) |
PH due to lung conditions | 10 (6.8) | 0(0) | 4 (2.9) |
PH due to other conditions | 24 (16.3) | (0) | 1 (0.7) |
Reasons for PH unknown | 19 (12.9) | 4 (2.7) | 8 (5.4) |
CAMPHOR Activity limitation raw score | |||
Mean (SD) | 18.07 (3.99) | 17.91 (3.11) | 8.04 (6.33) |
Median (IQR) | 18.0 (15.0–21.0) | 18.0 (16.0–20.0) | 7.0 (3.0–13.0) |
%min | 0.7 | 0.7 | 17.7 |
%max | 0.7 | 2.0 | 0.7 |
Range | 4.0–30.0 | 6.0–26.0 | 0.0–26.0 |
Fit to the Rasch model
Scale | Item-trait interaction | PSI | Item-person fit residuals | Unidimensionality (95 % Confidence Interval) | |||
---|---|---|---|---|---|---|---|
Chi2
P-value | Item fit residual | Person fit residual | |||||
Mean | SD | Mean | SD | ||||
Activity limitation | 0.027 | 0.907 | −0.77 | 0.99 | −0.45 | 1.02 | 0.064 (0.042–0.085) |
Ideal values | >0.003a
| >0.8 | 0 | ± 1 | 0 | ± 1 | <0.05 |
Item | Location | SE | Fit residual | Chi2
| Prob |
---|---|---|---|---|---|
Cut toenails | 0.25 | 0.11 | 0.81 | 14.61 | 0.024 |
Bathe | 2.02 | 0.14 | −1.32 | 5.60 | 0.470 |
Get dressed | 2.64 | 0.15 | −0.35 | 7.02 | 0.319 |
Walk around house | 2.52 | 0.15 | −1.14 | 5.87 | 0.437 |
Walk short level distances | 1.82 | 0.14 | −1.43 | 4.49 | 0.611 |
Walk longer level distance | −0.37 | 0.11 | −1.87 | 5.65 | 0.464 |
Walk up incline | −0.30 | 0.12 | −2.15 | 10.39 | 0.109 |
Climb a flight of stairs | −1.18 | 0.11 | −1.89 | 9.48 | 0.148 |
Bend to pick up objects | 0.80 | 0.12 | 0.12 | 7.46 | 0.280 |
Stand for short time | 2.20 | 0.15 | 0.51 | 4.23 | 0.646 |
Stand for long time | −0.76 | 0.11 | −0.43 | 4.70 | 0.583 |
Lift heavy objects | −2.77 | 0.10 | 0.43 | 15.67 | 0.016 |
Carry heavy items | −3.42 | 0.11 | −0.07 | 3.95 | 0.684 |
Do light house work | −0.10 | 0.11 | −2.04 | 10.30 | 0.113 |
Do heavy housework | −3.33 | 0.11 | −0.73 | 8.07 | 0.233 |