Table 1

 Baseline characteristics of subjects with a musculoskeletal (MSK) disorder and age and sex matched MSK disorder-free controls

CharacteristicsMSK disorder (n = 310)MSK disorder-free (n = 620)p Value
Results are percentages unless otherwise stated.
*Standard deviation; †matching variables; ‡infectious disease requiring antibiotic treatment.
Age (years), mean (SD)51.1 (4.3)51.1 (4.3)–†
Women3737–†
Living alone1390.07
Professional status0.42
    Professionals79
    Managerial5954
    Workers1515
    Unemployed/retired1922
Education level0.48
    Primary3538
    Secondary2526
    Tertiary4036
Comorbidity
    Cancer310.08
    Infectious disease‡1460.0001
    Diabetes0.710.50
    Cardiovascular530.14
Antioxidant supplementation49.451.10.26