Summary regression coefficients obtained from random effects meta-analysis of within-study estimates from models including both BMI and grip strength (models also include age, where appropriate, and height) in four studies.

1<p>Binary variable for grip strength is defined as the lowest fifth versus the highest four fifths and binary variable for BMI is defined as the highest fifth versus the lowest four fifths. Hence regression coefficients display the difference for the at risk group versus the rest for both variables.