approached significanceP = 0.06
In the comparison of ARH versus CH, ARH versus WCURH, and ARH versus ANRH, the Begg and Mazumdar test was always not significant, whereas Egger’s test was significant ( P < 0.05) in the comparison of ARH versus CH and versus ANRH, and it approached significance ( P = 0.06) in the comparison of ARH versus WCURH.