Comparison 8. Lidocaine 2% gel 6 mL versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Mean pain score 20 minutes post‐insertion	1	145	Mean Difference (IV, Fixed, 95% CI)	‐0.80 [‐8.81, 7.21]
2 Side effects or adverse events	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Moderate or severe nausea	1	145	Odds Ratio (M‐H, Fixed, 95% CI)	0.19 [0.02, 1.68]
2.2 Moderately or severely dizzy	1	145	Odds Ratio (M‐H, Fixed, 95% CI)	0.39 [0.07, 2.07]
3 Satisfaction or acceptability	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Amount of pain was mostly or completely acceptable	1	143	Odds Ratio (M‐H, Fixed, 95% CI)	1.06 [0.50, 2.25]