Table IV.

Evaluation of publication bias by Egger’s linear regression test.

Comparison	Coefficient	Standard error	t	P> |t|	95% CI
T vs. C	3.69	2.07	1.78	0.13	−1.38–8.76
T/T+C/T vs. C/C	3.12	1.77	1.76	0.13	−1.22–7.46
T/T vs. C/C+C/T	1.87	1.71	1.09	0.32	−2.32–6.06
T/T vs. C/C	2.11	1.91	1.11	0.31	−2.57–6.80
T/T vs. C/T	−0.21	1.37	−0.16	0.88	−3.58–3.15

95% CI, 95% confidence interval.