Here are the key details: Population
= 1,755 institutionalised and community - dwelling Spanish
people (985
females and 770 males), aged > 65 years Intervention
= four different measurements of strength (grip, shoulder abduction, hip flexion and knee extension) using a hand dynamometer, compiled into a composite measure Comparisons
= four quartiles of strength (high, medium - high, medium - low, and low) Outcome
= risk ratios for mortality and hospitalisation To combine the four measurements of strength into one composite measure, the researchers used the following calculation.