Sample size | Total(cm) | Left(cm) | Right(cm) | t valuea | P valuea | |
---|---|---|---|---|---|---|
Current study | 15 | 12.40 ± 0.83 | 12.38 ± 0.86 | 12.42 ± 0.84 | – | – |
Yamada etc. [19] | 40 | – | 12.15 ± 10.30 | 12.18 ± 10.10 | left: − 0.09; right: – 0.09 | left: 0.932;right: 0.928 |
Zhu etc. [20] | 30 | – | 12.13 ± 8.33 | 12.06 ± 7.54 | left: − 0.12; right: – 0.18 | left: 0.909;right: 0.856 |
Yuan etc. [21] | 25 | 12.09 ± 7.89 | – | – | − 0.15 | 0.881 |
Wang etc. [22] | 30 | 12.00 ± 6.52 | – | – | − 0.24 | 0.815 |