Comparison 3. Chromium (400 μg) versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Change in body mass index	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1 6 weeks	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 12 weeks	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
2 Change in weight	3		Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 6 weeks	1	42	Mean Difference (IV, Random, 95% CI)	‐0.7 [‐7.51, 6.11]
2.2 12 weeks	3	280	Mean Difference (IV, Random, 95% CI)	‐1.14 [‐1.89, ‐0.39]
3 Percent body fat change	3		Mean Difference (IV, Random, 95% CI)	Subtotals only
3.1 Short‐term	1	122	Mean Difference (IV, Random, 95% CI)	‐0.87 [‐1.95, 0.21]
3.2 Medium‐term	3	280	Mean Difference (IV, Random, 95% CI)	‐0.90 [‐1.98, 0.18]
4 Change in fat mass	3		Mean Difference (IV, Random, 95% CI)	Subtotals only
4.1 6 weeks	1	42	Mean Difference (IV, Random, 95% CI)	‐0.43 [‐4.61, 3.75]
4.2 12 weeks	3	280	Mean Difference (IV, Random, 95% CI)	‐1.57 [‐2.27, ‐0.87]
5 Change in waist circumference	1		Mean Difference (IV, Fixed, 95% CI)	Subtotals only
5.1 6 weeks	1	42	Mean Difference (IV, Fixed, 95% CI)	0.20 [‐5.81, 6.21]
5.2 12 weeks	1	37	Mean Difference (IV, Fixed, 95% CI)	‐1.40 [‐7.72, 4.92]
6 Change in fasting glucose	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
6.1 12 weeks	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
7 Change in total cholesterol	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
7.1 12 weeks	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
8 Change in triacylglycerol	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
8.1 12 weeks	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]