Psychometric properties of the EORTC QLQ-C30 in Uganda

Table 3 Descriptive statistics for the subscales of EORTC QLQ-C30 by language version, Luganda (N = 217) and English (N = 168)

Subscales (no of items)	Mean^a (SD)	Range of item means (SD)	Floor/ceiling effect^b, %	Cronbach’s α
PF (5)
Luganda	2.47 (0.91)	1.74–3.10 (1.10–1.19)	8.8/9.2	0.86
English	2.31 (0.95)	1.61–2.90 (1.01–1.24)	7.7/14.9	0.88
RF (2)
Luganda	3.00 (1.02)	2.89–3.10 (1.05–1.09)	35.5/11.5	0.91
English	2.77 (1.10)	2.77–2.77 (1.13–1.17)	28/18.5	0.90
EF (4)
Luganda	2.29 (0.96)	2.16–2.38 (1.08–1.12)	9.7/13.8	0.89
English	2.26 (0.98)	2.15–2.52 (1.08–1.15)	8.9/21.4	0.91
CF (2)
Luganda	2.17 (1.00)	2.12–2.21 (1.13–1.18)	11.1 /26.3	0.66
English	2.03 (0.91)	1.90–2.15 (1.08–1.15)	5.4/29.8	0.50
SF (2)
Luganda	3.03 (1.03)	3.02–3.03(1.10–1.16)	41.0/9.7	0.79
English	3.08 (0.98)	3.01–3.15(1.01–1.12)	42.9/6.5	0.81
FA (3)
Luganda	2.66 (0.96)	2.52–2.84 (1.04–1.08)	7.8/18.0	0.89
English	2.50 (0.98)	2.42–2.55(1.09–1.16)	14.3/9.5	0.85
NV (2)
Luganda	1.82 (1.07)	1.72–1.93(1.07–1.16)	53.0/11.1	0.92
English	1.61 (0.92)	1.44–1.79 (0.88–1.08)	58.3/5.4	0.85
PA (2)
Luganda	2.83 (0.99)	2.80–2.86(1.05–1.10)	9.2/27.2	0.83
English	2.70 (1.08)	2.70–2.70(1.10–1.18)	16.7/24.4	0.89
Global QOL (2)
Luganda	4.02 (1.51)	4.02–4.02 (1.54–1.56)	5.5/3.7	0.94
English	3.93 (1.53)	3.89–3.98 (1.55–1.57)	3.6/3.6	0.96

PF; Physical function, RF; Role function, EF; Emotional function, CF; Cognitive function, SF; Social function, FA; Fatigue, NV; Nausea and vomiting, PA; Pain, Global QoL; Global quality-of-life
^aMeans and SDs calculated on raw scores; higher scores indicate better HRQoL and more symptoms
^bFloor and ceiling effects calculated on transformed scores

ISSN: 1477-7525