Table 4 Potential predictive factors for Return to Work: Healthcare Workers versus Non-Healthcare Workers

 Age

Mean (SD)

43.67 (6.51)

40.06 (10.37)

40.25 (10.19)

0.5927

41.88(9.02)

39.78(8.48)

40.56(8.68)

0.3452

 Sex

Female

3 (100.0 %)

45 (86.54 %)

48 (87.27 %)

1.0000

7 (29.17 %)

9 (22.50 %)

16 (25.00 %)

0.5510

Male

0 (0.00 %)

7 (13.46 %)

7 (12.73 %)

17 (70.83 %)

31 (77.50 %)

48 (75.00 %)

 Conjugal relationship

Yes

1 (33.33 %)

23 (46.00 %)

24 (45.28 %)

1.0000

10 (43.48 %)

17 (42.50 %)

27 (42.86 %)

0.9398

No

2 (66.67 %)

27 (54.00 %)

29 (54.72 %)

13 (56.52 %)

23 (57.50 %)

36 (57.14 %)

 Duration of pain (months)

Min-Max

[12.00,’72.00]

[2.00,384.00]

[2.00,384.00]

0.5547

[5.00,336.00]

[5.00,324.00]

[5.00,336.00]

0.2882

Mean (SD)

35.33 (32.15)

83.38(90.69)

80.76(89.04)

107.50(89.31)

87.25(87.69)

94.84(88.15)

Median

22.00

36.00

36.00

102.00

60.00

66.00

 VAS Visual Analogue Scale TO

Min-Max

[2.00,3.00]

[0.00,9.00]

[0.00,9.00]

0.7343

[0.50,8.00]

[0.00,8.00]

[0.00,8.00]

0.9824

Mean (SD)

2.50 (0.71)

3.14 (2.26)

3.11 (2.22)

4.51 (2.32)

4.48 (1.99)

4.49 (2.09)

Median value

2.50

3.00

3.00

4.55

5.00

5.00

 Repetitive Lumbago history

Yes

3 (100.0 %)

30 (57.69 %)

33 (60.00 %)

0.2667

15 (62.50 %)

23 (57.50 %)

38 (59.38 %)

0.6934

No

0 (0.00 %)

22 (42.31 %)

22 (40.00 %)

9 (37.50 %)

17 (42.50 %)

26 (40.63 %)

 Recurrent Lumbosciatica

Yes

2 (66.67 %)

27 (51.92 %)

29 (52.73 %)

1.0000

11 (45.83 %)

15 (37.50 %)

26 (40.63 %)

0.5111

No

1 (33.33 %)

25 (48.08 %)

26 (47.27 %)

13 (54.17 %)

25 (62.50 %)

38 (59.38 %)

 Comorbidity (0 = none; 1 = cardiovascular,

0

1 (33.33 %)

33 (66.00 %)

34 (64.15 %)

0.3853

8 (34.78 %)

19 (48.72 %)

27 (43.55 %)

0.5871

1

2 (66.67 %)

13 (26.00 %)

15 (28.30 %)

9 (39.13 %)

13 (33.33 %)

22 (35.48 %)

 others…;2 = psychiatric)

2

0 (0.00 %)

4 (8.00 %)

4 (7.55 %)

6 (26.09 %)

7 (17.95 %)

13 (20.97 %)

 Tobacco (packs.years)

Min-Max Mean (SD)

[0.00,0.00]

[0.00,15.00]

[0.00,15.00]

0.5277

[0.00,45.00]

[0.00,30.00]

[0.00,45.00]

0.7779

0.00 (0)

1.64

1.57

6.53

5.03

5.57

 Weight (Kg)

Min-Max Mean (SD)

[62.00,70.00]

[42.00,90.00]

[42.00,90.00]

0.5799

[43.00,118.00]

[43.00,117.00]

[43.00,118.00]

0.7507

66.17 (4.01)

64.55

64.64

73.15

73.90

73.62

 Height (cm)

Min-Max Mean (SD)

[160.00,160.00]

[150.00,187.00]

[150.00,187.00]

0.1520

[153.00,190.00]

[150.00,190.00]

[150.00,190.00]

0.4942

160.00 (0)

166.58 (7.60)

166.33 (7.56)

171.46 (9.25)

172.85 (9.90)

172.32 (9.61)

 BMI

Mean

25.78 (2.21)

23.25 (4.40)

23.35 (4.35)

0.2491

24.89 (6.07)

24.53 (3.87)

24.67 (4.78)

0.7247

 Fingertip-floor distance (cm)

Min-Max

[10.00,37.00]

[−5.00,90.00]

[−5.00,90.00]

0.6308

[0.00,57.00]

[0.00,45.00]

[0.00,57.00]

0.0289

Mean (SD)

19.67 (15.04)

16.47 (15.96)

16.65 (15.79)

27.57 (15.79)

17.76 (11.76)

21.34 (14.07)

Median

12.00

16.50

16.00

25.00

19.00

22.00

value

 Schober index (cm)

Min-Max

[2.00,4.00]

[1.00,7.00]

[1.00,7.00]

[0.00,5.00]

[1.50,5.00]

[0.00,5.00]

0.5258

Mean (SD)

3.00 (1.00)

3.23 (1.16)

3.22 (1.14)

2.93 (1.11)

3.22 (0.94)

3.10 (1.01)

Median value

3.00

3.00

3.00

3.00

3.00

3.00

 Absenteeism

Min-Max

[0.00,365.00]

[0.00,570.00]

[0.00,570.00]

0.7976

[0.00,720.00]

[0.00,540.00]

[0.00,720.00]

0.1189

 Before inclusion (days)

Mean (SD)

142 (196)

91 (120)

94 (123)

204 (178)

134 (142)

161 (158)

Median value

60.00

47.00

53.50

140.00

83.50

110.00

 Job Satisfaction

Yes

1 (50.00 %)

36 (78.26 %)

37 (77.08 %)

0.4096

11 (61.11 %)

30 (83.33 %)

41 (75.93 %)

0.0961

NO

1 (50.00 %)

10 (21.74 %)

11 (22.92 %)

7 (38.89 %)

6 (16.67 %)

13 (24.07 %)

 FABQ activity

Min-Max

[14.00,’24.00]

[0.00,42.00]

[0.00,42.00]

0.2288

[3.00,24.00]

[0.00,24.00]

[0.00,24.00]

0.3785

Mean (SD)

18.67 5.03)

14.34 (8.56)

14.68 (8.37)

16.17 (6.37)

14.83 (6.22)

15.22 (6.21)

Median value

18.00

13.00

13.50

18.00

15.00

16.00

 FABQ work

Min-Max

[30.00,40.00]

[0.00,42.00]

[0.00,42.00]

0.1124

[14.00,42.00]

[2.00,42.00]

[2.00,42.00]

0.8801

Mean (SD)

34.33 (5.13)

23.31 (12.36)

24.18 (12.28)

29.45 (10.28)

29.17 (11.98)

29.25 (11.41)

Median value

33.00

23.00

25.50

32.00

33.00

33.00

 QUEBEC scale

Min-Max

[34.00,71.00]

[5.00,72.00]

[5.00,72.00]

0.2717

[16.00,80.00]

[3.00,65.00]

[3.00,80.00]

0.0855

Mean (SD)

46.67 (21.08)

32.58 (21.35)

33.75 (21.40)

46.7 (17.12)

35.28 (17.16)

38.63(17.74)

Median value

35.00

28.00

33.50

48.50

33.00

38.00

 HAD scale anxiety

Min-Max

[4.00,15.00]

[1.00,19.00]

[1.00,19.00]

0.2726

[3.00,18.00]

[3.00,17.00]

[3.00,18.00]

0.7932

Mean (SD)

11.00 (6.08)

7.86 (4.31)

8.11 (4.45)

10.08 (4.48)

10.25 (4.05)

10.20 (4.13)

Median value

14.00

8.00

8.00

10.00

10.00

10.00

 HAD scale Depression

Min-Max

[5.00,10.00]

[0.00,14.00]

[0.00,14.00]

0.2182

[1.00,13.00]

[1.00,18.00]

[1.00,18.00]

0.6710

Mean (SD)

8.00(2.65)

5.54(4.00)

5.74 (3.94)

7.62 (4.41)

7.19 (4.08)

7.31 (4.13)

Median value

9.00

4.00

5.00

9.00

7.00

7.00

 DALLAS Anxiety/ Depression

Min-Max

[50.00,80.00]

[0.00,85.00]

[0.00,85.00]

0.0785

[0.00,100.00]

[0.00,90.00]

[0.00,100.00]

0.1862

Mean (SD)

60.00 (17.32)

31.28 (26.18)

33.44 (26.59)

56.54 (30.03)

45.00 (27.11)

48.33 (28.14)

Median value

50.00

25.00

30.00

65.00

48.75

55.00

 DALLAS Work and leisure

Min-Max

[35.00,85.00]

[2.50,90.00]

[2.50,90.00]

0.6099

[40.00,95.00]

[5.00,90.00]

[5.00,95.00]

0.1294

Mean (SD)

61.67 (25.17)

51.88 (26.72)

52.61 (26.43)

69.62 (18.22)

57.98 (21.82)

61.34 (21.32)

Median value

65.00

57.50

60.00

70.00

60.00

65.00

 DALLAS

Min-Max

[42.00,90.00]

[0.00,81.00]

[0.00,90.00]

0.3219

[45.00,87.00]

[24.00,93.00]

[24.00,93.00]

0.3713

 Daily activities

Mean (SD)

66.00 (24.00)

49.86 (21.61)

51.08 (21.89)

66.58 (13.58)

61.64 (18.38)

63.07 (17.13)

Median value

66.00

54.00

55.50

69.00

64.50

66.00

 DALLAS

Min-Max

[35.00,45.00]

[0.00,75.00]

[0.00,75.00]

0.1345

[10.00,85.00]

[0.00,90.00]

[0.00,90.00]

0.5172

 Sociability

Mean (SD)

40.00 (5.00)

22.70 (20.80)

24.00 (20.54)

45.96 (30.37)

36.64 (24.86)

39.33 (26.56)

Median value

40.00

20.00

20.00

50.00

35.00

35.00

Ergonomic and OP intervention

Yes

0 (0.00 %)

24 (47.06 %)

24 (45.28 %)

0.4949

12 (54.55 %)

26 (70.27 %)

38 (64.41 %)

0.2225

No

2 (100.0 %)

27 (52.94 %)

29 (54.72 %)

10 (45.45 %)

11 (29.73 %)

21 (35.59 %)

Physiotherapy 0 = none 1 = classic

0

1 (33.33 %)

1 (2.04 %)

2 (3.85 %)

0.0177

2 (8.70 %)

2 (5.56 %)

4 (6.78 %)

0.7026

1

2 (66.67 %)

17 (34.69 %)

19 (36.54 %)

13 (56.52 %)

18 (50.00 %)

31 (52.54 %)

2 = trained physiotherapist

2

0 (0.00 %)

31 (63.27 %)

31 (59.62 %)

8 (34.78 %)

16 (44.44 %)

24 (40.68 %)

Physiotherapy

Yes

1 (33.33 %)

1 (2.00 %)

2 (3.77 %)

0.1110

2 (8.33 %)

2 (5.41 %)

4 (6.56 %)

0.6427

No

2 (66.67 %)

49 (98.00 %)

51 (96.23 %)

22 (91.67 %)

35 (94.59 %)

57 (93.44 %)

Min-Max

[0.00,’20.00]

[0.00,100.00]

[0.00,100.00]

0.5231

[0.00,300.00]

[0.00,60.00]

[0.00,300.00]

0.2150

Physiotherapy (number of training sessions)

Mean (SD)

13.33 (11.55)

20.70 (13.53)

20.28 (13.44)

41.13 (62.31)

20.32 (12.30)

28.51 (41.04)