# Table 3 Multiple regression analysis of predicting ICC-G (intraclass correlation coefficient of all 4 PedsQL Generic Core Scales subscales)

All Children (N = 522) Young child (n = 205) School age (n = 215) Adolescent (n = 102)
B p VIF B p VIF B p VIF B p VIF
Child’s age .006 .311 1.384 −.044 .285 1.449 .006 .732 1.132 −.022 .511 1.255
Child’s sex .016 .645 1.034 .021 .730 1.090 −.006 .899 1.048 .100 .249 1.125
Family member’s age −.002 .639 1.267 .002 .773 1.013 −.005 .193 1.095 .004 .661 1.179
Family member’s relationship to the child −.068 .328 1.031 −.022 .870 1.076 −.011 .904 1.042 −.290 .136 1.146
Number of friends −.008 .680 1.022 −.010 .802 1.042 −.025 .340 1.032 .027 .569 1.075
Attendance at nursery/school −.017 .202 1.037 −.006 .829 1.466 −.028 .186 1.093 −.035 .333 1.208
Family attendance ratio −.069 .080 1.144 −.046 .537 1.064 −.111 .043 1.069 −.019 .845 1.066
R2 .022 .319   .018 .948   .046 .356   .068 .665
Adjust R2 .003    −.039    .005    −.028
1. Notes: Excluding missing values.
2. Child’s sex: dummy code as 1 = Male, 0 = Female; Family member’s relationship to the child: dummy code as 1 = Mothers, 0 = Others; Number of friends: 1 = none, 2 = one friend, 3 = 2–3 friends, 4 = over 4 friends; Attendance at nursery/school: dummy code as 1 = Yes, 0 = No; Family attendance ratio was calculated that number of days of child hospitalization divided by number of days of family attendance in the previous a month.
3. Abbreviations: B Non-standardized partial regression coefficient, PedsQL Pediatric Quality of Life Inventory™, R Coefficient of determination, VIF Variance inflation factor