Table 2

Demographic and disease characteristics of participants

Patient meeting (n=13)1st postal survey (n=1754)*†2nd postal survey (n=687)*‡
Male (%)11 (84.6)929 (53.0)372 (54.1)
Age (years), mean±SD56.8±13.348.3±13.448.3±14.1
Duration of disease (years), mean±SD35.3±13.222.8±14.020.4±13.8
BASDAI, mean±SD2.6±1.55.5±2.45.4±2.4
BASFI, mean±SDNo data4.6±2.64.5±2.6
Total back pain (NRS 0–10), mean±SDNo data6.0±2.84.7±2.8
  • *Analysis based on complete dataset regarding demographic questionnaires.

  • †Patients from seven English speaking countries (Australia (n=24), Canada (n=255), Ireland (n=91), New Zealand (n=36), Singapore (n=40), UK (n=706) and USA (n=602)) represented four continents (Europe, America, Asia, Australia/New Zealand).

  • ‡Patients coming from Canada (n=94), Ireland (n=81), New Zealand (n=39), Singapore (n=36), the UK (n=190) and the USA (n=248).

  • BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index; NRS, numerical rating scale.