Table 2

Univariate and adjusted ORs from the regression analyses for the following associations: (A) neck-shoulder disorders in 1994 and neck-shoulder pain in 2008, (B) neck-shoulder pain in 1994 and neck-shoulder pain in 2008, (C) neck-shoulder disorders in 1994 and physical functioning in 2008, and (D) neck-shoulder pain in 1994 and physical functioning in 2008

VariablesCategoriesUnivariateMultivariate*
OR95% CIOR95% CI
Moderate/severe neck-shoulder pain 2008
A
 Neck-shoulder disorder 1994Absence, n=1241Ref.1Ref.
Presence, n=234.81.7 to 13.85.91.9 to 17.7
 Comorbidity 1994–2008No comorbidity, n=1301Ref.1Ref.
≥1 comorbidity, n=172.10.7 to 5.93.51.0 to 11.4
 Age, squared0.90.9 to 1.00.90.9 to 1.0
 Number of transitions between income types 1994–20080 to ≤17 transitions, n=461Ref.1Ref.
>17 to ≤31 transitions, n=461.20.5 to 2.81.40.6 to 3.4
>31 transitions, n=550.80.3 to 1.60.70.3 to 1.6
B
 Neck-shoulder pain 1994None/mild pain, n=981Ref.1Ref.
Moderate/severe pain, n=507.03.2 to 15.48.23.5 to 19.2
 Comorbidity 1994–2008No comorbidity, n=1311Ref.1Ref.
≥1 comorbidity, n=172.10.7 to 5.93.20.9 to 11.4
 Age, squared0.90.9 to 1.00.90.9 to 1.0
 Number of transitions between income types 1994–20080 to ≤17 transitions, n=461Ref.1Ref.
>17 to ≤31 transitions, n=461.20.5 to 2.81.10.5 to 2.9
>31 transitions, n=560.80.3 to 1.60.70.3 to 1.6
Low physical functioning 2008
C
 Neck-shoulder disorder 1994Absence, n=1321Ref.1Ref.
Presence, n=235.51.8 to 17.15.01.5 to 16.1
 Comorbidity 1994–2008No comorbidity, n=1341Ref.1Ref.
≥1 comorbidity, n=217.12.0 to 25.14.61.2 to 17.1
 Age, squared1.01.0 to 1.01.01.0 to 1.0
 Number of transitions between income types 1994–20080 to ≤17 transitions, n=491Ref.1Ref.
>17 to ≤31 transitions, n=490.90.4 to 2.01.20.5 to 3.0
>31 transitions, n=571.70.8 to 3.72.41.0 to 5.9
D
 Neck-shoulder pain 1994None/mild pain, n=1031Ref.1Ref.
Moderate/severe pain, n=532.51.3 to 5.02.21.1 to 4.6
 Comorbidity 1994–2008No comorbidity, n=1351Ref.1Ref.
≥1 comorbidity, n=217.12.0 to 25.14.51.2 to 16.6
 Age, squared1.01.0 to 1.01.01.0 to 1.0
 Number of transitions between income types 1994–20080 to ≤17 transitions, n=491Ref.1Ref.
>17 to ≤31 transitions, n=490.50.1 to 1.81.00.4 to 2.5
>31 transitions, n=580.70.2 to 2.22.10.9 to 4.9
  • *Adjusted for age squared, comorbidity 1994–2008 and number of transitions between different income types 1994–2008.