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Table 5 Known-group validation according to the performance status

From: Development of a new multimedia instrument to measure cancer-specific quality of life in Portuguese-speaking patients with varying literacy skills

IQualiV-OG-21 domains ECOG performance status P a ES
Mean (SD)
0–1 2–4
(n = 220) (n = 100)
Emotional 37.6 (24.7) 50.9 (23.3) <0.001 13.22 0.53
Physical 25.9 (22.0) 48.6 (20.2) <0.001 22.71 0.95
Financial 33.7 (31.8) 51.6 (30.5) <0.001 17.87 0.55
Existential 11.6 (20.6) 23.4 (23.5) <0.001 11.87 0.53
Functional 19.6 (20.4) 49.8 (24.7) <0.001 30.27 1.16
Personal relationships 13.5 (20.8) 13.4 (20.8) 0.952 −0.14 −0.00
Total score 23.6 (16.3) 39.6 (15.6) <0.001 17.67 0.90
  1. SD standard deviation, difference between the two groups, ES effect size
  2. a T test