Table 3.
Socio-demographic characteristics of the current study population and eight other Dutch shoulder research study populations
| Current study N = 72 |
Van der Windt 1996 N = 335 |
De Winter 1999 N = 201 |
Winters 1999 N = 101 |
Bot 2005 N = 281 |
Bergman 2005 N = 71 |
Kuijpers 2006 N = 492 |
Feleus 2008 N = 682 |
Reilingh 2008 N = 587 |
|
|---|---|---|---|---|---|---|---|---|---|
| Age (years,± SD) | |||||||||
| 43 (12.3) | 49.6 (14.4) | 48 (12) | 47.3 (15.4) | 49.2 (13.8) | 47.8 (11.8) | 52 (14) | 45* | 49.5 (14.7)† 51.9 (13.9)‡ 52.9 (13.3)¶ | |
| Gender (%) | |||||||||
| female | 69 | 56 | 66 | 58 | 63 | 52 | 50 | 52 | 50 |
| Education level | |||||||||
| Low | 6 | NA | NA | NA | 44 | NA | NA | 36 | 36 |
| Medium | 47 | NA | NA | NA | 42 | NA | NA | 36 | 41 |
| High | 47 | NA | NA | NA | 14 | NA | NA | 28 | 23 |
| Duration of shoulder pain (month) | |||||||||
| < 3 m | 0 | 85 | 26 | 75 | 66 | 70 | 60 | 74 | 59 |
| 3-6 m | 16 | 30 | 40 | 41 | |||||
| > 6 m | 100 | 15 | 55 | 25 | 34 | 26 | |||
*Feleus reported the median instead of the mean age
†Mean age (±SD) of the acute pain group (< 6 weeks)
‡Mean age (±SD) of the subacute pain group (6-12 weeks)
¶Mean age (±SD) of the chronic pain group (> 3 months)
NA (not available). It was not possible to derive these data from the papers.