Skip to main content

Table 4 Patient characteristics of participants and non-participants

From: Knee disorders in primary care: design and patient selection of the HONEUR knee cohort

  all participants in cohort participants in sample non-participants in sample comparison# of participation rates
  N n
(%)
N n
(%)
N n
(%)
OR
(95% CI)
gender (n women ) 1045 494
(47%)
130 64
(49%)
180 83
(46%)
1.20
(0.78–1.85)
age (n >35 years ) 1045 741
(71%)
130 94
(72%)
180 109
(61%)
1.79
(1.12–2.86)*
   in men 551 380
(69%)
66 46
(69%)
97 50
(52%)
2.08
(1.11–3.93)*
   in women 494 361
(73%)
64 48
(78%)
83 59
(71%)
1.41
(0.69–2.90)
   in traumatic 197 134
(68%)
16 11
(73%)
34 17
(50%)
2.60
(0.80–8.98)
   in non-traumatic 848 607
(72%)
114 83
(73%)
146 92
(63%)
1.63
(0.98–2.72)
   trauma $ (n positive ) 1045 197
(19%)
130 16
(12%)
180 34
(19%)
0.59
(0.32–1.09)
   in men 551 109
(20%)
66 9
(14%)
97 20
(21%)
0.60
(0.26–1.38)
   in women 494 88
(18%)
64 7
(11%)
83 14
(17%)
0.58
(0.23–1.47)
ICPC codes        
L15: unspecified   519
(51%)
  69
(53%)
  82
(46%)
 
L78: acute distortion   107
(10%)
  7
(5%)
  20
(11%)
 
L90: osteoarthritis   77
(7%)
  9
(7%)
  28
(16%)
 
L94.2: Osgood-Schlatter   10
(1%)
  1
(1%)
  0 0%  
L96: acute meniscus/ligament ruptures   87
(8%)
  12
(9%)
  14
(8%)
 
L97: chronic internal trauma   245
(23%)
  32
(25%)
  36
(20%)
 
  1. $ patient described onset of complaints in questionnaire as immediate, due to impact or twisting, maximally 1 year before consultation
  2. # comparing participation rates of age groups and traumatic injuries in sample
  3. * p-value < 0.05
  4. N total number of patients
  5. n number of patients in a subset