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Table 5 Dimensions characteristics of the 32-item 2nd version of the ReTransQol (n=1059)

From: Analysis, evaluation and adaptation of the ReTransQoL: a specific quality of life questionnaire for renal transplant recipients

RTQ dimension (number of items) Mean ± SD IIC IDV MV (%) Floor (%) Ceiling (%) Cronbach’s α INFIT
PH (8) 59.5 ± 18.7 0.61 - 0.75 0.09 - 0.44 1.9 0.1 0.6 0.83 0.81 – 1.3
SF (5) 77 ± 19.3 0.65 - 0.77 0.11 - 0.35 1.6 0.3 11.7 0.74 0.83 – 1.22
MC (8) 72.7 ± 17.6 0.71 - 0.84 0.09 - 0.33 3 0.3 6.9 0.9 0.74 – 1.3
TR (5) 79 ± 15.8 0.42 - 0.76 0.10 - 0.40 2.7 0.7 0.6 0.7 0.88 – 1.29
FLG (6) 58.4 ± 20.4 0.60 - 0.74 0.01 - 0.40 1.6 0 9.9 0.78 0.89 – 1.2
  1. PH, Physical health; SF, Social functioning; MC, Medical care and satisfaction; TR, Treatment; FG, Fear of losing graft; IIC, item-internal consistency (min-max of Pearson’s r correlation coefficient); IDV, item-discriminant validity (min-max of Pearson’s r correlation coefficient); MV, percentage of missing values; Floor, floor effect (%); Ceiling, ceiling effect (%); Cronbach’s α, Cronbach’s alpha consistency coefficient; INFIT, min-max Rasch statistics.