Table 4

The relative health related quality of life of veterans with Parkinson’s disease and self reporting eight other chronic diseases, adjusted for age, sex, race, education, and 15 co-morbid conditions

Mean (SE) physical component summary scoreMean (SE) mental component summary score
Chronic condition (1)Per cent of core population (weighted n)* (2)Mean (SD) number of self reported chronic conditions (3)With condition (4)Without condition (5)Mean effect of condition on PCS in points† (SE) (6)With condition (7)Without condition (8)Mean effect of condition on MCS in points† (SE) (9)
*Total weighted core population, 3 199 209.
 †An effect size of −4.55 is equivalent to 0.46 of one standard deviation.
 All coefficients are significant at p < 0.001.
 MCS, mental component summary score of the short form-36 questionnaire; PCS, physical component summary score.
Spinal cord injury3.6%5.1032.3836.93−4.5544.0044.89−0.89
(116 189)(0.006)(0.069)(0.013)(0.070)(0.075)(0.014)(0.077)
Depression29.6%4.9635.8837.17−1.2935.9448.89−12.95
(946 693)(0.005)(0.026)(0.017)(0.033)(0.030)(0.018)(0.038)
Parkinson’s disease1.2%4.0132.7236.82−4.1041.4844.91−3.42
(39 405)(0.024)(0.096)(0.013)(0.096)(0.106)(0.014)(0.107)
Congestive heart failure13.4%6.3933.6837.25−3.5742.7845.19−2.41
(428 538)(0.007)(0.035)(0.014)(0.038)(0.040)(0.015)(0.044)
Stroke8.8%5.8233.6937.06−3.3743.1345.03−1.89
(281 760)(0.009)(0.041)(0.013)(0.06)(0.046)(0.014)(0.048)
Chronic low back pain39.9%4.6033.7638.89−5.1443.6745.70−2.04
(1 276 539)(0.004)(0.021)(0.018)(0.028)(0.023)(0.019)(0.031)
Arthritis50.2%4.4634.1539.59−5.4444.5745.16−0.59
(1 606 481)(0.003)(0.018)(0.020)(0.028)(0.020)(0.021)(0.030)
Diabetes18.8%5.0635.0437.18−2.1444.2245.01−0.79
(600 805)(0.006)(0.028)(0.014)(0.031)(0.031)(0.015)(0.034)
Angina/coronary heart disease18.6%5.9435.4937.07−1.5844.6644.85−0.25
(596 323)(0.005)(0.032)(0.015)(0.037)(0.039)(0.016)(0.041)