Table 1

Characteristics of our present study population and of patients with and without paid work

Total study population (N=381)Patients with paid work (47%, n=181)Patients without paid work (53%, n=200)
General patient characteristics
 Age (years)61 (8)55 (6)66 (7)
 Sex, women, n (%)319 (84)150 (83)169 (85)
 BMI (kg/m2)27.6 (4.9)27.5 (4.9)27.8 (5.0)
 Living with a partner, n (%)312 (82)152 (84)160 (80)
 Education, high,* n (%)101 (26)57 (31%)44 (21%)
Hand-specific characteristics
 Fulfilling ACR hand OA criteria, n (%)344 (90)153 (85)191 (95)
 Erosive hand OA, n (%)113 (30)35 (20)78 (39)
 Symptom duration (years)†5.5 (2.1–13.0)4.3 (1.6–9.3)7.2 (2.8–17.7)
 AUSCAN hand pain (0–20)9 (4)9 (5)10 (4)
 AUSCAN hand function (0–36)16 (8)15 (9)17 (10)
 Tender joint count (0–30)*3 (1–6)3 (1–6)4 (2–8)
 KL summated score (0–120)†16 (8–29)13 (5–21)22 (11–37)
General burden
 Any comorbidity present, n (%)209 (55)88 (49)121 (61)
 Amount of comorbidities†1 (0–1)0 (0–1)1 (0–1)
 Fulfilling ACR hip OA criteria, n (%)30 (8)9 (5)21 (6)
 Fulfilling ACR knee OA criteria, n (%)127 (33)53 (29)74 (37)
 HADS total score (0–42)†7 (4–12)7 (3–10)7 (4–12)
Work characteristics
 Retired, n (%)116 (31)116 (58)
 Full work disability, n (%)24 (6)5 (3)19 (12)
 Full work disability due to hand OA, n (%)6 (2)6 (3)0 (0)
 Partial work disability, n (%)12 (3)8 (4)4 (2)
 Partial work disability due to hand OA, n (%)6 (2)4 (2)2 (1)
 Predominantly manual profession, n (%)‡26 (9)11 (17)15 (8)
  • Numbers represent mean (standard deviation) unless otherwise specified.

  • *Defined as having completed university-level education.

  • †Median (IQR).

  • ‡Defined as a score of 5 or 6 on the scale by de Zwart et al.26

  • ACR, American College of Rheumatology; AUSCAN, Australian Canadian Osteoarthritis Hand Index; BMI, body mass index; HADS, Hospital Anxiety and Depression Scale; KL, Kellgren-Lawrence; OA, osteoarthritis.