Skip to main content
. 2015 Jul 17;10(7):e0126105. doi: 10.1371/journal.pone.0126105

Table 1. Demographic Characteristics of the study participants.

Characteristics Non-working Patients Working Patients
Number of patients 254 228
Number of Male (%) 193 (76) 167 (73)
Mean age in years (standard deviation) 59.74 (12.3) 46.73 (11.38)
Age<66 (% of patients) 169 (66.5) 215 (94.3)
Age retired (95% CI) 53.59 (52.14–55.04)
Early retirement due to AS: No. of patients (% of patient) 173 (74)
Gap (years) between usual & actual age of retirement For patients with early retirement due to AS 10.23 (8.59–11.89)
Gap (years) between usual & actual age of retirement For patients with early retirement not due to AS 7.18 (4.69–9.66)
Mean comparison t-test p-value 0.049
Mean hours/week actually worked (95% CI) (n) 35.1 (32.93–37.29) n = 211
Mean hours/week absent due to AS (95% CI) (n)
For patients who were absent at least one hour 7.61 (4.1–11.13) (n = 31)
For all patients in the job 1.15 (0.52–0.77) (n = 206)
Mean hours/week absent due to other reason (95% CI) (n)
For patients who were absent at least one hour 13.26 (9.25–17.27) (n = 35)
For all patients in the job 2.20 (1.27–3.12) (n = 211)
Total hours/week working (95% CI) (n) 38.42 (36.52–40.32) (n = 211)
Productivity loss in daily regular activity (mean score on a 0–10 scale, higher values indicate higher loss) 5.22 (4.88–5.58) (n = 254) 3.28 (2.93–3.63) (n = 225)
Productivity loss in on-the-job work (mean score on a 0–10 scale, higher values indicate higher loss) 2.19 (1.89–2.50) (n = 223)
BASDAI: Mean (95% CI) 49.97 (46.79–53.15) 38.56 (35.47–41.66)
BASFI: Mean (95% CI) 58.29 (54.85–61.73) 35.13 (31.82–38.45)
Health Status: Mean (95% CI) 51.44 (48.51–54.37) 66.12 (63.48–68.76)
EQ5D: Mean (95% CI) 0.47 (0.43–0.52) 0.68 (0.65–0.71)
AS Duration from diagnosis: Years (95% CI) 23.59 (21.37–25.80) 15.60 (13.94–17.26)
AS Duration from first symptom Years (95% CI) 32.62 (30.47–34.78) 23.67 (21.98–25.37)