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Table 2 Comparison between grades of the Kellgren-Lawrence between categorical variables and description of the sample regarding the performance in the evaluated tests

From: Relationship between radiological severity and physical and mental health in elderly individuals with knee osteoarthritis

Variable Grade 0 Grade 1 Grade 2 Grade 3 Grade 4 p value* Mean (SD)
N (%) N (%) N (%) N (%) N (%)
GDS       p = 0.988 6.89 (1.68)
 0–5 9 (16.36) 5 (12.50) 6 (18.75) 8 (20.00) 2 (15.38)   
 6–10 43 (78.18) 35 (85.00) 25 (78.13) 30 (75.00) 11 (84.62)   
 11–15 3 (5.45) 1 (2.50) 1 (3.13) 2 (5.00) 0 (0.00)   
MMSE       p = 0.774 23.45 (3.98)
 0–9 1 (1.82) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00)   
 10–20 9 (16.36) 8 (20.00) 7 (21.88) 12 (30.00) 3 (23.08)   
 21–26 28 (50.51) 22 (55.00) 13 (46.88) 22 (33.00) 6 (46.15)   
 ≥ 27 17 (30.91) 10 (25.00) 10 (31.23) 6 (15.00) 4 (30.77)   
WOMAC       p = 0.450 16.25 (21.4)
 0–25 19 (31.67) 18 (34.62) 8 (33.33) 5 (15.63) 2 (15.38)   
 26–50 29 (48.33) 24 (46.15) 12 (50.00) 18 (56.23) 4 (30.77)   
 51–75 8 (13.33) 6 (11.54) 2 (8.33) 5 (15.63) 4 (30.77)   
 76–100 4 (6.67) 4 (7.69) 2 (8.33) 4 (12.50) 3 (23.08)   
TUG       p = 0.124 10.88 (4.74)
 0–10 32 (53.33) 28 (53.85) 15 (62.50) 19 (59.30) 5 (38.46)   
 11–20 27 (45.00) 24 (46.15) 9 (37.50) 11 (34.38) 6 (46.15)   
 21–29 1 (1.67) 0 (0.00) 0 (0.00) 0 (0.00) 2 (15.38)   
 ≥ 30 0 (0.00) 0 (0.00) 0 (0.00) 2 (6.25) 0 (0.00)   
BBS       p = 0.061 50.28 (6.65)
 0–36 3 (5.000 1 (1.92) 2 (8.33) 2 (6.25) 3 (23.08)   
 37–44 1 (1.67) 2 (3.85) 1 (4.17) 4 (12.50) 1 (7.69)   
 45–56 56 (93.33) 49 (94.23) 21 (87.50) 26 (81.25) 9 (69.23)   
  1. *p value for the Fisher’s exact test