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Table 1 Sample-weighted baseline characteristics

From: Specific manifestations of knee osteoarthritis predict depression and anxiety years in the future: Vancouver Longitudinal Study of Early Knee Osteoarthritis

  No baseline depression (Weighted N = 97.0) Baseline depression (Weighted N = 25.0) No baseline anxiety (Weighted N = 90.0) Baseline anxiety (Weighted N = 32.0)
Age, mean (SD) 55.5 (9.0) 55.8 (9.9) 56.5 (8.8) 52.9 (9.0)
Age decade, n (%)
 40–49 21.6 (22.3) 9.0 (36.1) 16.4 (18.2) 14.2 (44.5)
 50–59 47.8 (49.3) 6.7 (26.7) 41.7 (46.3) 12.8 (39.9)
 60–69 17.8 (18.4) 5.1 (20.2) 21.4 (23.7) 1.5 (4.8)
 70–79 9.8 (10.1) 4.2 (17.0) 10.6 (11.8) 3.5 (10.8)
Female, n (%) 59.5 (61.4) 8.5 (33.9) 48.8 (53.8) 19.5 (61.1)
Body mass index, mean (SD) 25.9 (4.2) 26.5 (3.3) 26.2 (4.0) 25.7 (4.1)
BMI ≥ 25, n (%) 49.9 (51.4) 17.4 (69.6) 51.5 (57.2) 15.8 (49.4)
Effusion, n (%) 17.9 (18.5) 6.0 (24.0) 16.1 (17.9) 7.8 (24.6)
Crepitus, n (%)
 None 29.2 (30.2) 8.5 (34.0) 27.0 (29.9) 10.8 (33.8)
 Fine 49.6 (51.1) 11.9 (47.4) 45.2 (50.2) 16.3 (50.9)
 Coarse 18.2 (18.7) 4.6 (18.5) 17.9 (19.9) 4.9 (15.3)
Malalignment, n (%) 11.5 (11.9) 4.6 (18.3) 10.7 (11.9) 5.4 (16.9)
Quadriceps atrophy, n (%) 30.5 (31.4) 7.5 (30.0) 25.2 (27.9) 12.8 (40.1)
Flexion (degrees), mean (SD) 134.3 (8.6) 133.2 (6.9) 134.4 (8.0) 133.2 (8.8)
Flexion contracture (deg.), mean (SD) 1.5 (3.9) 1.7 (2.8) 1.8 (3.9) 0.6 (2.7)
Kellgren-Lawrence grade, n (%)
 0 40.8 (42.0) 8.9 (35.7) 36.1 (40.1) 13.6 (42.6)
 1 14.0 (14.4) 10.0 (40.2) 17.1 (19.0) 6.9 (21.6)
 2 24.9 (25.7) 2.5 (10.0) 19.9 (22.1) 7.5 (23.5)
 3+ 17.3 (17.9) 3.5 (14.1) 16.9 (18.8) 3.9 (12.3)
WOMAC pain, mean (SD) 18.0 (16.4) 23.4 (19.9) 18.1 (16.5) 21.9 (19.5)
WOMAC pain (25+) 23.8 (24.6) 8.4 (33.7) 22.6 (25.1) 9.7 (30.4)
WOMAC stiffness, mean (SD) 2.4 (2.4) 2.1 (1.9) 2.3 (2.4) 2.3 (2.0)
WOMAC stiffness (25+) 38.1 (39.3) 11.1 (44.5) 35.7 (39.6) 13.6 (42.4)
Self-reported knee swelling in last 12 months, n (%) 54.8 (56.5) 16.5 (66.0) 46.3 (51.4) 25.1 (48.5)
Painful joint count, mean (SD) 7.8 (6.8) 9.4 (12.3) 7.5 (7.0) 9.8 (11.4)
Previous physician diagnosis knee OA
 No 57.1 (58.9) 16.3 (65.4) 56.6 (62.9) 16.8 (52.7)
 Probable 30.4 (31.3) 6.1 (24.4) 24.9 (27.7) 11.6 (36.2)
 Definite 9.5 (9.8) 2.6 (10.3) 8.5 (9.5) 3.6 (11.2)
  1. WOMAC = Western Ontario and McMaster Universities (WOMAC) Osteoarthritis Index VA3.1