Comparison 7. Vitamin D (with or without calcium) vs control: subgroup analysis by vitamin D level at baseline.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
7.1 Rate of falls	7		Rate Ratio (IV, Random, 95% CI)	Subtotals only
7.1.1 Selected for lower vitamin D levels	2	260	Rate Ratio (IV, Random, 95% CI)	0.57 [0.37, 0.89]
7.1.2 Not selected for lower vitamin D levels	5	9064	Rate Ratio (IV, Random, 95% CI)	1.02 [0.93, 1.13]
7.2 Number of fallers	13		Risk Ratio (IV, Random, 95% CI)	Subtotals only
7.2.1 Selected for lower vitamin D levels	4	804	Risk Ratio (IV, Random, 95% CI)	0.70 [0.56, 0.87]
7.2.2 Not selected for lower vitamin D levels	9	25943	Risk Ratio (IV, Random, 95% CI)	1.00 [0.93, 1.07]