Figure 3. Forest plot of odds ratio for success rates. A, Bet ween males and females. The results in both subgroups showed no significant difference in success rates. B, Between age groups. Homogeneous subgroups showed higher success rates in patients aged 20 years and over (≥ 20 years) except subgroup of retrospective studies and studies with small samples. C, Between long miniscrew implants (MIs) (≥8 mm) and short MIs (<8 mm). Long MIs had significantly higher success rates. D, Between large diameter (>1.4 mm) and small diameter (≤1.4 mm) screws. MIs with large diameters had significantly higher success rates.