Table 5

Country comparison of internal consistency reliability of the KDQOL-SFTM version 1.3 questionnaire
Scales Egypt US(1) Japan(2) Iran(3) Netherland(4)
Kidney disease targeted scales
·Symptoms/problems 0.81 0.84 0.81 0.92 0.80
·Effects of kidney disease 0.73 0.82 0.79 0.89 0.76
·Burden of kidney disease 0.88 0.83 0.81 0.86 0.80
·Work status 0.28 0.83 0.69 0.71 0.39
·Cognitive function 0.60 0.68 0.73 0.74 0.83
·Quality of social interaction 0.23 0.61 0.35 0.77 0.39
·Sexual function 0.90 0.89 0.92 0.92 0.95
·Sleep 0.90 0.90 0.61 0.77 0.72
·Social support 0.88 0.89 0.76 0.76 0.67
SF-36
·Physical function 0.95 0.92 0.90 0.93 ….
·Role-physical 0.76 0.87 0.88 0.89 ….
·Pain 0.87 0.90 0.83 0.88 ….
·General health 0.83 0.78 0.80 0.74 ….
·Mental health 0.70 0.80 0.84 0.73 ….
·Role-Emotional 0.83 0.86 0.92 0.79 ….
·Social function 0.88 0.87 0.73 0.82 ….
·Energy/Fatigue 0.81 0.90 0.81 0.79 ….

1 Data by Hays et al (1994).

2 Data by Green et al (2001).

3 Data by Pakpour et al (2011).

4 Data by Korevaar et al (2002).

Abd ElHafeez et al.

Abd ElHafeez et al. BMC Nephrology 2012 13:170   doi:10.1186/1471-2369-13-170

Open Data