Table 2 Worker productivity assessed by the WPAI for employed patients with CLBP, nr-axSpA or AS (18–45 years of age)

 Absenteeism present, n (% (95% CI))

38 (12 (8–16))

5 (10 (4–23))

2 (14 (2–43))

 Absenteeism, mean % (SD)

53 (31)

47 (43)

54 (59)

 Presenteeism present, n (% (95% CI))

188 (59 (53–64))

23 (47 (34–61))

7 (53 (27–79))

 Presenteeism, mean % (SD)

45 (28)

46 (32)

59 (34)

 Work impairment present, n (% (95% CI))

197 (62 (56–67))

25 (52 (37–67))

8 (57 (29–82))

 Work impairment, mean % (SD)

49 (30)

48 (33)

62 (36)

 Activity impairment present, n (% (95% CI))

322 (68 (63–72))

45 (63 (51–75))

19 (79 (58–93))

 Activity impairment, mean % (SD)

51 (27)

49 (28)

56 (34)