Table 3. Results of meta-regression analyses.

Comorbidity	Covariate*	N studies	Coefficient (95% CI)	p-value
Cardiovascular	% male	14	-0.003 (-0.066 to 0.060)	0.927
Cardiovascular	age	14	-0.015 (-0.072 to 0.042)	0.605
Hypertension	% male	13	0.007 (-0.016 to 0.029)	0.559
Hypertension	age	13	-0.001 (-0.035 to 0.032)	0.943
Diabetes	% male	16	-0.011 (-0.069 to 0.047)	0.706
Diabetes	age	16	-0.014 (-0.091 to 0.062)	0.716

*Age was mean age of study population, otherwise median was used.