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Table 2 Descriptive statistics of the ASQoL and comparator scales (n = 183)

From: Adaptation of Chinese and English versions of the Ankylosing Spondylitis quality of life (ASQoL) scale for use in Singapore

  Mean (SD) % ceiling (Best score) % Floor (Worse score)
ASQoL 4.6 (4.2) 19.1 0
Pain VAS (0–100) 35.0 (25.1) 3.3 0
PGA (0–100) 37.6 (24.5) 3.3 0
PhGA (1–5) 2.3 (0.9) 0 0.5
BASDAI (0–100) 33.1 (18.2) 0.5 0
BASFI (0–100) 20.5 (20.1) 12 0
BAS–G (0–100) 38.9 (21.6) 2.2 0
HAQ (0–3) 0.28 (0.39) 42.6 0
SF–36 PCS (norm-based) 42.9 (11.8) NA NA
SF–36 MCS (norm-based) 43.7 (12.3) NA NA
  1. VAS visual analogue scale, PGA Patient Global Assessment of disease activity, PhGA Physician’s Global Assessment of disease activity, BASDAI Bath Ankylosing Spondylitis Functional Index, BASFI Bath Ankyosing Spondylitis Functional Index, BAS-G Bath Ankylosing Spondylitis Global activity assessment, HAQ Health Assessment Questionnaire, SF-36 Medical Outcome Short Form-36 Physical Component Summary, MCS Mental Component Summary, Norm–based normalization to population norm with mean 50 and SD 10, NA not applicable