Table 4.

Egger’s regression intercept, Duval and Tweedie’s and Classic fail-safe n-studies

Variable	Egger’s regression intercept			Duval and Tweedie’s		Classic fail safe–N studies
	Egger intercept	Egger IC	P-value*	To left	To right
Gender (males)	2.12	[-11.81—16.04]	0.05	1.19 [0.85–1.66]	*	-
Short frenulum	1.24	[-6.08—8.55]	0.54	2.55 [1.71–3.79]	*	21
High arch palate	4.11	[-0.34—8.57]	0.054	*	*	37
Free tongue length	-1.841	[-29.87—26.19]	0.56	*	0.10 [-2.15–2.35]	-

^*p < 0.05. Abbreviations. N: number; CI: confidence interval