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Table 4 Psychometric properties of the QoLISSY child self reported scale in the field test sample

From: Assessing the quality of life of health-referred children and adolescents with short stature: development and psychometric testing of the QoLISSY instrument

Domain Descriptive statistics Reliability
N Items N Children Mean SD Skewness % Floor % Ceiling N α Split-half N ICC
Physical 6 268 73.69 22.80 -.951 0.4 12.3 263 .84 .83 120 .80
Social 8 268 72.94 22.93 -.787 0.4 10.4 265 .87 .83 121 .80
Emotional 8 268 72.69 23.87 -.938 1.1 10.1 259 .88 .88 121 .85
Coping 10 257 55.60 22.38 -.190 1.2 1.2 244 .82 .65 110 .56
Beliefs 4 266 69.13 28.59 -.776 3.8 21.1 263 .85 .85 117 .83
Treatment 14 152 55.12 21.06 -.125 0.7 0.7 143 .87 .74 72 .73
QoLISSY total score 22 268 73.10 21.39 -.802 0.4 4.9 251 .95 .92 120 .88
  1. α: Cronbachs Alpha; ICC: intra class correlation coefficient.
  2. N for treatment scale is low because domain was answered only by GH- treated patients; QoLISSY total score is sum of Physical, Social and Emotional domains.