Table 2.
HRQOL scores of CBHD, HBHD patients and age-sex adjusted HK general population
| SF-12v2 | Overall HD patientsa (n = 233) | Age-sex adjusted HK general populationa (n = 233) | P-value | Effect sizeb | CBHD patients (n = 110) | HBHD patients (n = 134) | P-value for ANOVA | Significant difference*** |
|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||||
| Physical functioning | 66.85 (32.55) | 83.91 (26.03) | <0.001* | 0.58 | 73.64 (29.68) | 61.38 (34.09) | <0.001** | 3 > 1 > 2 |
| Role physical | 71.35 (31.01) | 79.08 (26.07) | 0.004* | 0.27 | 71.48 (32.27) | 71.36 (30.11) | 0.015** | 3 > 2 |
| Bodily pain | 70.71 (31.62) | 78.54 (25.97) | 0.004* | 0.27 | 77.50 (32.12) | 64.93 (30.21) | <0.001** | 1, 3 > 2 |
| General health | 37.55 (25.78) | 46.93 (29.82) | <0.001* | 0.34 | 41.36 (24.99) | 35.00 (26.51) | <0.001** | 3 > 2 |
| Vitality | 57.40 (24.15) | 61.91 (29.09) | 0.070 | 0.17 | 55.68 (24.10) | 58.96 (24.02) | 0.123 | |
| Social functioning | 77.25 (29.69) | 81.97 (24.94) | 0.064 | 0.17 | 78.18 (31.42) | 77.43 (28.08) | 0.242 | |
| Role emotional | 78.54 (25.42) | 77.25 (23.01) | 0.567 | 0.05 | 81.36 (25.10) | 76.40 (24.94) | 0.228 | |
| Mental health | 75.00 (19.97) | 70.06 (18.92) | 0.006* | 0.25 | 75.34 (21.11) | 74.81 (19.08) | 0.020** | |
| Physical component summary score | 42.77 (11.11) | 47.50 (11.82) | <0.001* | 0.41 | 45.71 (11.02) | 40.26 (10.89) | <0.001** | 1, 3 > 2 |
| Mental component summary score | 54.68 (9.14) | 49.82 (10.41) | <0.001* | 0.50 | 55.51 (7.96) | 54.15 (9.94) | <0.001** | 1, 2 > 3 |
HRQOL: Health-related Quality of Life; CBHD: Community-Based Haemodialysis; HBHD: Hospital-Based Haemodialysis; HK: Hong Kong
aOf 2,831 respondents in the study of population norm of the SF-12v2 in Hong Kong, 233 HD patients were matched to 233 general population subjects with sex and exact age. 11 subjects could not be matched
bCohen’s d effect size between HD patients (overall) and HK general population
*Significant difference between HD patients (overall) and HK general population (P < 0.05)
**Significant difference between three groups (P < 0.05) by one-way ANOVA: Group 1, CBHD; Group 2, HBHD; Group 3, Hong Kong general population
***Significant difference between groups by post hoc Tukey’s HSD test (P < 0.05)