However, the average preoperative SLA measurements were greater in the PSO and VCR groups 13.4 and 13.0 cm than the SPO group 4.83 cm, therefore the groups are not comparable.
No obstante, las medias de SVA preoperatorios son mayores en los grupos de PSO y VCR 13,4 y 13,0 cm respecto a SPO 4,83 cm, por lo que los grupos no son comparables.