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Table 4 Distribution of Health-Related Quality of Life (HRQL) scores

From: Measurement properties of the EQ-5D-Y administered through a smartphone app in children with asthma: a longitudinal questionnaire study

Distribution of scores

EQ-5D-Y Utility Index

EQ-VASa

PROMIS-PAISb Raw score

Sample

119

119

75

Theoretical Range

 + 1, − 0.5392

100, 0

8, 40

 

Best–worst

Best–worst

Best–worst

Observed Range

 + 1, + 0.5095

100, 25

8, 29

Floor effect

0.0%

0.0%

0.0%

Ceiling effect

60.3%

23.5%

32.0%

Mean (SD)

0.93 (0.11)

84.3 (17.1)

11.9 (4.9)

Missing

3 (2.5%)

0 (0.0%)

0 (0.0%)

  1. aEQ-VAS: EuroQol-Visual Analogue Scale
  2. bPROMIS-PAIS: Patient-Reported Outcomes Measurement Information System-Pediatric Asthma Impact Scale