Table 3.

Meta-regression analysis of included studies

Covariates	Coefficient	Prevalence% (95% CI)	P
Sex	−0.1224102	−0.249389 to 0.0045685	0.058
BMI	0.1193532	−0.0552379 to 0.2939443	0.167
Sampling Resources	0.0422022	−0.1150036 to 0.1994079	0.577
Study Region	−0.0464984	−0.2383049 to 0.1453082	0.614
Altitude	0.2072192	0.0288484 to 0.38559	0.026