The Outcomes of Minimally Invasive versus Open Posterior Approach Spinal Fusion in Treatment of Lumbar Spondylolisthesis: The Current Evidence from Prospective Comparative Studies
Table 2
Quality assessment of five included studies.
Methodological item for nonrandomised studies
Ghahreman et al.
Wang et al.
Archavlis and Carvi y Nievas
Kotani et al.
Parker et al.
() A clearly stated aim
2
2
2
2
2
() Inclusion of consecutive patients
1
2
2
1
1
() Prospective collection of data
2
2
2
2
2
() Endpoints appropriate to the aim of the study
2
2
2
2
2
() Unbiased assessment of the study end point
0
0
0
0
0
() Follow-up period appropriate to the aim of the study
