Table 1

 Characteristics of the patients and control subjects

CharacteristicPatients (n = 317)Controls (n = 68)
Values are n (%) or mean (SD).
Demographic data at follow up
    Men251 (79%)50 (74%)
    Age (years)54 (11)56 (12)
    Follow up time (years)18 (2)
    Body mass index (kg/m2)26 (4)26 (4)
    Median occupational workloadLight labourClerical work
    Median spare time physical activity  levelModerateModerate
Demographic data at index surgery
    Age (years)36 (12)
    Arthroscopic technique48 (15%)
    Medial meniscectomy250 (79%)
    Total meniscectomy155 (49%)
    Degenerative meniscal tear121 (38%)