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Table 2 Comparison of mean (SD) and median (IQR) for CHU-9D-CHN and PedsQL scores according to respondent characteristics

From: An assessment of the construct validity of the Child Health Utility 9D-CHN instrument in school-aged children: evidence from a Chinese trial

  Number (%) CHU-9D utility, UK tariff CHU-9D utility, Chinese tariff PedsQL total score
Mean (SD), median (IQR) Mean (SD), median (IQR) Mean (SD), Median (IQR)
Gender     
Male 831 (54.0) 0.932 (0.072), 0.952 (0.897–1.000) 0.914 (0.098), 0.939 (0.873–1.000) 82.29 (11.72), 83.69 (75.00–91.30)
Female 708 (46.0) 0.943 (0.063), 0.963 (0.909–1.000) 0.927 (0.089), 0.955 (0.881–1.000) 83.66 (10.54), 85.86 (77.17–91.30)
p-value*   0.003* 0.004* 0.06
Mother’s university education     
Yes 963 (62.6) 0.936 (0.068), 0.956 (0.903–1.000) 0.920 (0.091), 0.943 (0.876–1.000) 82.58 (11.29), 83.69 (76.08–91.30)
No 576 (37.4) 0.938 (0.068), 0.963 (0.903–1.000) 0.921 (0.099), 0.952 (0.874–1.000) 83.49 (11.07), 85.86 (77.17–91.30)
p-value*   0.27 0.42 0.08
Mother education level     
1 School education 296 (19.2) 0.937 (0.070), 0.963 (0.895–1.000) 0.921 (0.096), 0.953 (0.870–1.000) 83.06 (11.18), 85.86 (76.08–91.30)
2 Occupation college 280 (18.2) 0.940 (0.067), 0.963 (0.907–1.000) 0.919 (0.102), 0.945 (0.879–1.000) 83.95 (10.96), 85.86 (78.26–91.30)
3 University undergraduate education 847 (55.1) 0.937 (0.068), 0.958 (0.903–1.000) 0.920 (0.091), 0.943 (0.876–1.000) 82.58 (11.37), 83.69 (76.08–91.30)
4 University postgraduate education 116 (7.5) 0.932 (0.070), 0.952 (0.901–1.000) 0.919 (0.092), 0.942 (0.885–1.000) 82.59 (10.71), 84.23 (75.00–89.13)
p-value**   0.27 0.36 0.19
Father’s university education     
Yes 1005 (65.3) 0.936 (0.068), 0.955 (0.902–1.000) 0.920 (0.091), 0.943 (0.876–1.000) 82.90 (11.06), 84.78 (76.08–91.30)
No 534 (34.7) 0.939 (0.069), 0.963 (0.904–1.000) 0.921 (0.100), 0.955 (0.876–1.000) 82.97 (11.51), 85.86 (76.08–91.30)
p-value*   0.17 0.38 0.61
Father education level     
1 School education 247 (16.2) 0.931 (0.075), 0.963 (0.892–1.000) 0.911 (0.110), 0.943 (0.864–1.000) 82.27 (11.65), 83.69 (75.00–91.30)
2 Occupation college 287 (18.6) 0.946 (0.062), 0.963 (0.915–1.000) 0.928 (0.090), 0.955 (0.882–1.000) 83.57 (11.36), 85.86 (76.08–92.39)
3 University undergraduate education 824 (53.5) 0.937 (0.067), 0.960 (0.903–1.000) 0.921 (0.090), 0.943 (0.877–1.000) 83.11 (11.14), 84.78 (76.08–91.30)
4 University postgraduate education 181 (11.7) 0.932 (0.072), 0.952 (0.897–1.000) 0.916 (0.096), 0.943 (0.870–1.000) 81.91 (10.65), 83.69 (76.08–89.13)
p-value**   0.42 0.63 0.53
Weight status groups     
Underweight 75 (4.9) 0.942 (0.067), 0.963 (0.908–1.000) 0.923 (0.092), 0.938 (0.873–1.000) 82.47 (12.06), 85.86 (72.82–92.39)
Healthy weight 1189 (77.2) 0.936 (0.069), 0.962 (0.900–1.000) 0.919 (0.095), 0.943 (0.876–1.000) 82.84 (11.13), 83.69 (76.08–91.30)
Overweight 165 (10.7) 0.941 (0.064), 0.963 (0.909–1.000) 0.925 (0.086), 0.955 (0.874–1.000) 83.18 (11.65), 85.86 (76.08–91.30)
Obese 110 (7.2) 0.939 (0.071), 0.962 (0.914–1.000) 0.921 (0.096), 0.943 (0.890–1.000) 83.69 (10.94), 86.95 (77.17–91.30)
p-value**   0.73 0.89 0.29
Weight status groups     
Underweight/healthy weight 1264 (82.1) 0.936 (0.069), 0.963 (0.901–1.000) 0.919 (0.095), 0.943 (0.875–1.000) 82.82 (11.18), 83.69 (76.08–91.30)
Overweight/Obese 275 (17.9) 0.940 (0.067), 0.964 (0.909–1.000) 0.923 (0.090), 0.944 (0.876–1.000) 83.38 (11.35), 85.86 (76.08–91.30)
p-value**   0.38 0.66 0.27
  1. IQR inter-quartile range, SD standard deviation
  2. *Kruskal–Wallis test
  3. **Non-parametric test for trend