Skip to main content

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