Table 1 Socio-demographic and clinical characteristics of participants consulting for a knee complaint according to diagnostic concordance between health providers (n = 279)

Age

45.7 (13.6)

50.4 (16.5)

0.03*

0.98 (0.96–0.998)

0.03*

Gender

 Woman

46 (59.0)

115 (57.2)

0.79

BMI (kg/m2)

29.5 (6.5)

29.3 (6.6)

0.81

Employment status

 Employed

53 (67.9)

121 (60.2)

0.008*

1.4 (0.8–2.4)

0.2

 Sick leave

12 (15.4)

14 (7.0)

2.4 (1.1–5.5)

0.03*

 Retired

5 (6.4)

42 (20.9)

0.26 (0.10–0.68)

0.006*

 Unemployed

8 (10.3)

24 (11.9)

0.84 (0.36–2.0)

0.7

Work physical demand

 1/ Sitting

20 (25.6)

63 (31.3)

0.02*

1.2 (1.0–1.5)

0.08

 2/ Light

12 (15.4)

20 (10.0)

 3/ Moderate

0

0

 4/ High

31 (39.7)

51 (25.4)

Duration of symptoms

  ≤ 1 month

7 (9.0)

10 (5.0)

0.21

  > 1 month

71 (91.0)

191 (95.0)

Onset Mechanism

 1/ Traumatic

35 (44.9)

52 (25.9)

0.002*

0.43 (0.25–0.74)

0.002*

 2/ Progressive

43 (55.1)

149 (74.1)

Pain Location

 Diffuse

33 (42.3)

81 (40.3)

0.76

 Located

45 (57.7)

120 (59.7)

Use of WA

 Yes

8 (10.3)

21 (10.4)

0.96

First consultation

 Yes

22 (28.2)

37 (18.4)

0.07

Personal income (n = 177)

  ≤ 30 000$

23 (47.9)

69 (53.5)

0.51

  > 30 000$

25 (52.1)

60 (46.5)

Timing of symptoms onset if traumatic onset

 Pain appeared immediatly

30 (85.7)

47 (95.9)

0.1

 Pain appeared with a delay

5 (14.3)

2 (4.1)

Timing of apparition of joint swelling if present

  < 2 h after trauma

13 (43.3)

18 (45.0)

0.9

  > 2 h after trauma

17 (56.7)

22 (55.0)

Bilateral symptoms:

 1/ No

70 (89.7)

156 (77.6)

0.02*

0.40 (0.18–0.89)

0.02*

 2/ Yes

8 (10.3)

45 (22.4)

Number of comorbidities

0.7 (0.9)

1.0 (1.0)

0.01*

0.69 (0.51–0.93)

0.02*

MRI results available at the time of consultation

43 (55.1)

72 (35.8)

0.003*

2.2 (1.3–3.7)

0.004*

Diagnosis

 Knee Osteoarthritis

22 (28.2)

95 (47.3)

 < 0.001*

0.44 (0.25–0.77)

0.004*

 Patellofemoral syndrome

15 (19.2)

44 (21.9)

0.85 (0.44–1.64)

0.6

 Meniscal injury

16 (20.5)

38 (18.9)

1.1 (0.6–2.1)

0.8

 ACL injury

10 (12.8)

17 (8.5)

1.6 (0.7–3.6)

0.3

 Other knee injury^a

15 (19.2)

7 (3.5)

6.6 (2.6–16.9)

 < 0.001*

Number of diagnoses

 1/ One diagnosis

43 (55.1)

156 (77.6)

 < 0.001*

2.8 (1.6–4.9)

 < 0.001*

 2/ Two or more diagnoses

35 (44.9)

45 (22.4)

KOOS Symptoms (/100)^b

72.2 (17.2)

69.2 (19.8)

0.26

KOOS Pain (/100)^b

58.6 (19.9)

58.5 (20.0)

0.97

KOOS Activities of daily living function (/100)^b

65.6 (22.1)

66.0 (22.0)

0.89

KOOS Sports and recreation function (/100)^b

25.3 (22.6)

30.0 (26.1)

0.17

KOOS Quality of life (/100)^b

38.1 (20.2)

38.6 (19.7)

0.86