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Table 3 Results of the non-response analyses for follow-up measurements

From: The course of complaints of arm, neck and/or shoulder: a cohort study in a university population participating in work or study

 

T1

Responders

(n = 180)a

T1

Non-responders

(n = 56)a

p-value

T2

Responders

(n = 170)a

T2

Non-responders

(n = 67)a

p-value

T3 Responders

(n = 162)a

T3

Non-responders

(n = 77)a

p-value

T4

Responders

(n = 165)a

T4

Non-responders

(n = 74)a

p-value

 

n(%)

n(%)

 

n(%)

n(%)

 

n(%)

n(%)

 

n(%)

n(%)

 

Health state (baseline scores)

 Complaints intensity in previous week (NRS) [0–10] mean (sd)

4.18 (2.3)

3.48 (2.2)

0.119

4.06 (2.3)

4.0 (2.3)

0.905

4.13 (2.2)

3.71 (2.16)

0.307

4.05 (2.27)

4.03 (2.31)

0.954

 Disability (DASH) [0–100] mean (sd)

15.3 (12.5)

12.6 (12.5)

0.393

15.4 (12.7)

12.3 (10.8)

0.234

14.9 (12.6)

15.5 (12.3)

0.808

14.6 (12.1)

16.9 (14.1)

0.339

 Impact participation and autonomy (IPA),

  Autonomy indoors [0–4] mean (sd)

0.21 (0.36)

0.95 (0.12)

0.065

0.18 (0.32)

0.21 (0.41)

0.657

0.16 (0.31)

0.18 (0.27)

0.879

0.16 (0.30)

0.32 (0.41)

0.065

  Family role [0–4] mean (sd)

0.50 (0.57)

0.60 (0.79)

0.545

0.52 (0.55)

0.44 (0.83)

0.714

0.49 (0.54)

0.59 (0.50)

0.522

0.46 (0.53)

0.74 (0.82)

0.095

  Autonomy outdoors [0–4] mean (sd)

0.57 (0.62)

0.71 (0.58)

0.413

0.57 (0.59)

0.61 (0.86)

0.844

0.53 (0.59)

0.59 (0.47)

0.752

0.55 (0.60)

0.68 (0.68)

0.373

  Social life and relationships [0–4], mean (sd)

0.45 (0.48)

0.43 (0.57)

0.879

0.50 (0.48)

0.28 (0.45)

0.096

0.48 (0.50)

0.55 (0.55)

0.621

0.46 (0.48)

0.36 (0.44)

0.323

  Work and education [0–4] mean (sd)

0.87 (0.71)

0.80 (0.67)

0.757

0.89 (0.70)

0.59 (0.73)

0.119

0.86 (0.71)

0.96 (0.59)

0.622

0.82 (0.69)

0.83 (0.69)

0.801

 Duration of complaints at baseline

  

0.246

  

0.371

  

0.151

  

0.697

   < 3 mo

105 (58.3)

28 (51.9)

 

95 (55.9)

38 (59.4)

 

96 (60.0)

37 (50.0)

 

94 (57.7)

39 (54.9)

 

   ≥ 3 mo

75 (41.7)

26 (48.1)

 

75 (44.1)

26 (40.6)

 

64 (40.0)

37 (50.0)

 

69 (42.3)

32 (45.1)

 

 History of CANS

  

0.208

  

0.151

  

0.062

  

0.264

  No

20 (15.3)

2 (6.1)

 

20 (15.5)

31 (88.6)

 

16 (13.9)

6 (12.2)

 

15 (12.8)

7 (14.9)

 

  Yes, one time before

15 (11.5)

2 (6.1)

 

15 (11.6)

2 (5.7)

 

16 (13.9)

1 (2.0)

 

15 (12.8)

2 (4.3)

 

  Yes, more times before

96 (73.3)

29 (87.9)

 

94 (72.9)

31 (88.6)

 

83 (72.2)

47 (85.7)

 

87 (74.4)

38 (80.9)

 

 Frequency of discomfort of complaints

  

0.729

  

0.862

  

0.581

  

0.792

  No discomfort

1 (0.8)

0 (0.0)

 

1 (0.8)

0 (0.0)

 

1 (0.9)

0 (0.0)

 

1 (0.8)

0 (0.0)

 

  Regularly

94 (70.7)

26 (76.5)

 

93 (71.5)

27 (73.0)

 

81 (69.8)

39 (76.5)

 

84 (71.2)

36 (73.5)

 

  Almost continuously

38 (28.6)

8 (23.5)

 

36 (27.7)

10 (27.0)

 

34 (29.3)

12 (23.5)

 

33 (28.0)

13 (26.5)

 

Personal factors

  Gender (female)

133 (73.5)

44 (78.6)

0.555

127 (74.7)

50 (74.6)

0.990

121 (75.6)

56 (72.7)

0.631

123 (75.5)

54 (73.0)

0.683

  Age (years), mean (sd)

36.1 (13.4)

33.5 (12.9)

0.193

36.8 (13.5)

32.2 (12.4)

0.014

35.9 (13.4)

34.4 (13.1)

0.421

36.5 (13.8)

33.3 (11.8)

0.069

  Paid work

119 (65.7)

28 (50.0)

0.050

114 (67.1)

33 (49.3)

0.017

102 (63.7)

45 (58.4)

0.430

103 (63.2)

44 (59.5)

0.583

  Student status

62 (34.3)

28 (50.0)

 

56 (32.9)

34 (50.7)

 

58 (36.3)

32 (41.6)

 

60 (36.8)

30 (40.5)

 

 Marital status

  

0.175

  

0.102

  

0.728

  

0.878

  Unmarried/ living alone

58 (34.9)

10 (55.6)

 

54 (34.2)

14 (53.8)

 

57 (37.7)

11 (33.3)

 

56 (36.8)

12 (37.5)

 

  Married/ living together

99 (59.6)

8 (44.4)

 

95 (60.1)

12 (46.2)

 

86 (57.0)

21 (63.3)

 

88 (57.9)

19 (59.4)

 

  Widow/ divorced

9 (5.4)

0 (0.0)

 

9 (5.7)

0 (0.0)

 

8 ()

1 (3.0)

 

8 (5.3)

1 (3.1)

 

 Children in the household

  

0.574

  

0.753

  

0.333

  

0.005

  No

144 (86.7)

16 (88.9)

 

138 (87.3)

22 (84.6)

 

133 (88.1)

27 (81.8)

 

137 (90.1)

23 (71.9)

 

  Yes, one or more

22 (13.3)

2 (11.1)

 

20 (12.7)

4 (15.4)

 

18 (11.9)

6 (18.2)

 

15 (9.9)

9 (28.1)

 

  Sports participation (yes)

81 (45.0)

27 (50.0)

0.623

77 (45.6)

31 (47.7)

0.441

78 (49.1)

30 (40.0)

0.195

74 (45.7)

34 (47.2)

0.827

  Meet Dutch Norm of Healthy Living (yes)

112 (62.2)

37 (68.5)

0.495

110 (65.1)

39 (60.0)

0.282

102 (64.2)

47 (62.7)

0.826

103 (63.9)

46 (63.9)

0.964

Participation

 Sick leave due to CANS

  

0.036

  

0.360

  

0.044

  

0.357

  Yes, <  1 mo

4 (3.4)

4 (14.3)

 

5 (4.4)

3 (9.1)

 

4 (3.9)

4 (8.9)

 

4 (3.9)

4 (9.1)

 

  Yes, ≥ 1 mo

1 (0.8)

1 (3.6)

 

1 (0.9)

1 (3.0)

 

0 (0.0)

2 (4.4)

 

1 (1.0)

1 (2.3)

 

  No

114 (77.6)

23 (82.1)

 

108 (94.7)

29 (87.9)

 

98 (96.1)

39 (86.7)

 

98 (95.1)

39 (88.6)

 

 Full-time work, n (%)

86 (68.8)

18 (64.3)

0.811

83 (68.6)

22 (66.7)

0.833

71 (67.9)

32 (68.1)

0.984

76 (71.0)

28 (60.9)

0.217

  Working in current job,

  

0.373

  

0.929

  

0.465

  

0.813

   < 3 y

45 (36.0)

7 (25.0)

 

41 (34.2)

11 (33.3)

 

38 (35.8)

14 (29.8)

 

37 (34.6)

15 (32.6)

 

   ≥ 3 y

80 (64.0)

21 (75.0)

 

79 (65.8)

22 (66.7)

 

68 (64.2)

33 (70.2)

 

70 (65.4)

31 (67.4)

 

 Work-related complaints (yes)

108 (89.3)

21 (80.8)

0.318

104 (89.7)

25 (80.6)

0.147

93 (89.4)

36 (83.7)

0.337

94 (89.5)

35 (83.3)

0.301

  1. T Time point, T1 6 weeks follow-up, T2 12 weeks follow-up, T3 6 months follow-up, T4 12 months follow-up, NRS Numeric Rating Scale, DASH Disabilities of the Arm, Hand and Shoulder Questionnaire, IPA Impact on Participation and Autonomy Questionnaire, sd standard deviation, mo month(s), y year(s)
  2. aTotal number of cases does not equal total study population due to missing values on complaint duration