Studies
VRa Mean (S.D.)
Control Mean (S.D.)
Mean difference (95% CI)
Wiet 2009 [22]
23 (8.6)
17 (8.5)
6.00 (−3.68 to 15.68)
Wiet 2012 [23]
2.2 (0.54)
2.14 (0.56)
0.06 (−0.21 to 0.33)