Reliability and validity of the Thai version of the Pediatric Quality of Life inventory™ 3.0 Duchenne Muscular Dystrophy module in Thai children with Duchenne Muscular Dystrophy

Table 3 Item-subscale correlations of the Thai version of the PedsQL™ 3.0 DMD module for DMD

Subscales & Items	Child				Parent
Subscales & Items	A	T	W	C	A	T	W	C
Daily Activities
Trouble eating with a fork and knife	0.76^a	0.39	0.44	0.00	0.77^a	0.47	0.34	0.27
Hard to write or draw with a pen or pencil	0.74^a	0.51	0.40	0.21	0.80^a	0.70	0.44	0.58
Hard to put on my clothes	0.84^a	0.17	0.02	0.02	0.90^a	0.52	0.34	0.25
Hard to use the toilet without help	0.74^a	0.20	0.10	0.04	0.81^a	0.51	0.21	0.36
Need more time than others to complete tasks	0.64^a	0.30	0.19	0.01	0.75^a	0.50	0.38	0.24
Treatment
Hard to take medicines	0.24	0.60^a	0.45	0.30	0.31	0.60^a	0.49	0.37
Physical therapy or daily stretching hurts	0.48	0.81^a	0.41	0.45	0.62	0.85^a	0.38	0.48
Hard to be responsible for my medicines or physical therapy	0.27	0.88^a	0.44	0.41	0.57	0.86^a	0.49	0.43
Hard to manage my muscle problem	0.29	0.83^a	0.61	0.34	0.61	0.88^a	0.60	0.45
Worry
Worry about my muscle problem	0.24	0.58	0.78^a	0.02	0.59	0.74	0.76^a	0.39
Worry whether or not my medicines are working	0.15	0.52	0.81^a	0.10	0.23	0.38	0.76^a	0.33
Worry about my family	0.49	0.48	0.83^a	0.18	0.37	0.44	0.73^a	0.28
Worry about needing help from others	0.30	0.39	0.80^a	0.19	0.38	0.40	0.84^a	0.40
Worry about not being accepted by others	0.19	0.32	0.73^a	0.42	0.22	0.45	0.71^a	0.45
Worry about being treated differently from others my age	0.05	0.47	0.68^a	0.37	0.06	0.29	0.68^a	0.34
Communication
Hard for me to tell the doctors and nurses how I feel	0.00	0.37	0.21	0.87^a	0.36	0.47	0.42	0.97^a
Hard for me to ask the doctors and nurses questions	0.05	0.40	0.20	0.91^a	0.46	0.58	0.52	0.96^a
Hard for me to explain my muscle problem to other people	0.16	0.48	0.29	0.84^a	0.40	0.47	0.44	0.93^a

Note: Pearson’s product moment correlations are designated as small (0.10), medium (0.30), and large (0.50)
A Daily Activities, T Treatment, W Worry, C Communication
^a Values represent correlations between items and their hypothesized subscales

ISSN: 1477-7525