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Table 1 Sample characteristics

From: Applying Rasch analysis to evaluate measurement equivalence of different administration formats of the Activity Limitation scale of the Cambridge Pulmonary Hypertension Outcome Review (CAMPHOR)

  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