Comparison 11. Safety: cognitive delay ‐ developmental delay.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
11.1 Cohort study	1		Odds Ratio (IV, Random, 95% CI)	Subtotals only
11.1.1 MDI‐BSID II 24th month. MMR	1		Odds Ratio (IV, Random, 95% CI)	1.35 [0.15, 12.07]
11.1.2 MDI‐BSID II 36th month. MMR	1		Odds Ratio (IV, Random, 95% CI)	0.37 [0.03, 4.28]
11.1.3 Raven 5th year. MMR	1		Odds Ratio (IV, Random, 95% CI)	1.22 [0.23, 6.51]
11.1.4 WISC‐R verbal 6th year. MMR	1		Odds Ratio (IV, Random, 95% CI)	1.23 [0.09, 16.92]