Table 1

 Characteristics of participants

CharacteristicsSiblingsCommunityp Value
BMI, body mass index (kg/m2); SD, standard deviation.
Number1221729
Age, mean (SD)70.3 (8.3)63.7 (9.4)0.00
Sex, No (%)
    Male48 (39)644 (37.2)0.70
    Female74 (61)1085 (62.8)
BMI, mean (SD)26.6 (4.9)26.8 (4.3)0.52
Knee pain, No (%)57/97 (59)1000/1729 (57.8)0.92