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Table 5 The relation between pain duration and the health outcomes, when neck pain was present

From: Simple neck pain questions used in surveys, evaluated in relation to health outcomes: a cohort study

Duration 1-7 days 8-90 days 91-365 days >365 days p-value Type III test
  Proportion (95% CI) Proportion (95% CI) Proportion (95% CI) Proportion (95% CI)  
Very good health 13 6 6 8 a
  (8.1; 21.2) (2.9; 11.5) (2.5; 12.1) (4.2; 13.7)  
Decreased general performance 13 30 30 30 a
  (8.9; 19.0) (22.5; 39.7) (21.4; 40.6) (22.2; 38.8)  
  Mean Mean Mean Mean p - value Type III test
  ( 95 % CI ) ( 95 % CI ) ( 95 % CI ) ( 95 % CI )  
Sleep disturbance score 4.5 4.7 4.8 5.1 0.007
  (4.31; 4.76) (4.44; 4.94) (4.54; 5.11) (4.83; 5.31)  
Stress score b 3.7 3.8 3.8 3.7 0.640
  (3.56; 3.82) (3.65; 3.95) (3.60; 3.93) (3.59; 3.87)  
Energy score b 3.9 4.0 3.9 3.8 0.302
  (3.84; 4.04) (3.85; 4.08) (3.76; 4.02) (3.73; 3.94)  
  1. For details of regression analysis see Additional file 1: Appendix.
  2. a No type-III test is available in Proc nlmixed, but according to p-values in the Additional file 1: Appendix pain duration was statistically significant in this model. b Adjusted for gender.
  3. Nsubj = 480–482, Nobs = 794–935.