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Table 1 Mean (SD) CHU9D-utilities and PedsQL-scores by student’s characteristics

From: The construct validity of the Child Health Utility 9D-DK instrument

 N (%)CHU9D-utilities - adolescent scoring algorithm applied (best-worst scaling method)CHU9D-utilities - adult scoring algorithm applied (standard gamble method)PedsQL-scores
  Mean (SD)Mean (SD)Mean (SD)
Whole sample2280.70 (0.22)0.84 (0.11)82.32 (13.14)
Gender
 Girls85 (37.2)0.62 (0.23)0.80 (0.12)76.50 (13.45)
 Boys143 (62.8)0.75 (0.20)0.86 (0.09)85.79 (11.68)
P-value* < 0.006a* < 0.001t* < 0.001t* < 0.001t
Year of study
 1st year74 (32.5)0.73 (0.23)0.85 (0.12)84.15 (13.87)
 2nd year83 (36.4)0.69 (0.22)0.83 (0.10)81.05 (12.96)
 3rd year71 (31.1)0.68 (0.21)0.83 (0.11)81.90 (12.52)
P-value0,743a0.394b0.448b0.321b
General health
 Excellent45 (19.7)0.83 (0.15)0.91 (0.07)92.00 (7.40)
 Very good129 (56.6)0.72 (0.20)0.84 (0.10)83.17 (10.70)
 Middle43 (18.9)0.59 (0.22)0.79 (0.10)75.58 (12.84)
 Not so good/poor11 (4.8)0.42 (0.26)0.69 (0.14)59.09 (17.33)
P-value* < 0.001a* < 0.001b* < 0.001b* < 0.001b
Disability or chronic disease
 No202 (88.6)0.71 (0.21)0.84 (0.10)83.50 (12.09)
 Yes26 (12.4)0.60 (0.26)0.78 (0.13)73.20 (17.18)
P-value* < 0.001a*0.012t*0.006t* < 0.001t
Satisfaction with lifec
 Not satisfied (1–3)19 (8.7)0.48 (0.22)0.74 (0.11)69.91 (17.04)
 Medium satisfied (4–7)65 (30.0)0.62 (0.23)0.79 (0.11)75.08 (13.10)
 Very satisfied (8–10)133 (61.3)0.77 (0.18)0.87 (0.09)86.92 (9.59)
P-value* < 0.001a* < 0.001b* < 0.001b* < 0.001b
Money: My family has
 A lot of money5 (2.2)0.81 (0.24)0.89 (0.11)85.22 (15.46)
 A reasonable amount of money71 (31.1)0.78 (0.17)0.87 (0.08)86.21 (9.93)
 Neither a lot or a little amount of money136 (59.6)0.66 (0.23)0.82 (0.11)80.63 (13.36)
 Little or very little money16 (7.1)0.64 (0.24)0.81 (0.12)78.53 (19.14)
P-value* < 0.001a*0.002b*0.003b*0.017b
Holidays last year
 No45 (19.7)0.66 (0.21)0.82 (0.10)80.12 (13.76)
 Yes, one time93 (40.8)0.65 (0.23)0.81 (0.11)79.74 (13.61)
 Yes, several times90 (39.5)0.77 (0.19)0.87 (0.10)86.10 (11.46)
P-value* < 0.001a* < 0.001b* < 0.001b*0.002b
  1. CHU9D Child Health Utility 9 Dimension, PedsQL Pediatric Quality of Life Inventory™ 4.0 Generic Core Scales, SD Standard deviation. aPearsons Chi2-test, bANOVA, c“don’t know” answers were categorised as missing (N = 217), tTwo sample t-test. *P < 0.05