Table 3

LT-VLA and original VLA battery characteristics (baseline, n=140)

LT-VLAVLA
Number of items, total1532
Number of items by domain
 Obligatory47
 Committed49
 Discretionary716
Cronbach's α (total)0.920.95
Mean (±SD) difficulty1.44±0.611.42±0.58
 Range, mean difficulty0.21–3.000.14–2.91
 Number (%) of scores at floor00
 Number (%) of scores at ceiling1 (0.7)0
 Correlation with long form0.98
Median (IQR) % activities affected80.0 (71.4, 92.9)74.8 (67.3, 88.4)
 Range, % activities affected7.1–1004.5–100
 Number (%) of scores at floor00
 Number (%) of scores at ceiling25 (17.9%)16 (11.4%)
 Correlation with long form0.97
Median (IQR) % activities unable16.7 (7.0, 32.1)14.3 (7.1, 28.6)
 Range, % activities unable0–93.30–93.8
 Number (%) of scores at floor19 (13.6%)13 (9.3%)
 Number (%) of scores at ceiling00
 Correlation with long form0.96
  • LT-VLA, lung transplant Valued Life Activities disability scale.