Component | Definition |
---|---|
Weight loss | BMI < 18.5 kg/m2 OR > 10% weight loss since last wave |
Exhaustion | Positive answer to either CES-D question (‘everything I did was an effort’ or ‘I could not get going’ |
Low grip strength (adjusted for BMI) Males: Grip adjusted for BMI = Maximum grip – ((BMI-27.6)× 0.31) Females: Grip adjusted for BMI = Maximum grip – ((BMI-27.9)× 0.07) | Low grip strength was defined as values in the lowest quintile at wave 2, for males and females separately: M < 31.12 kg F < 17.60 kg |
Low gait speed (adjusted for height) Males: Gait speed adjusted for BMI = Gait speed – ((height-172)×0.00941) Females: Gait speed adjusted for BMI = Gait speed – ((height-158)× 0.010) | Low gait speed was defined as values in the lowest quintile at wave 2, for males and females separately. M < 0.691 m/s F < 0.619 m/s |
Low activity | M < 16.5 activity units F < 13.5 activity units |