Comparison of Effectiveness between Cobalt Chromium Rods versus Titanium Rods for Treatment of Patients with Spinal Deformity: A Systematic Review and Meta-Analysis

Table 1

Newcastle-Ottawa scale for quality assessment of the eligible studies.

Study name	Selection	Comparability	Outcome	Total score
Sabah et al. 2018 [12]	4	2	3	9
Angelliaume et al. 2016 [16]	4	2	3	9
Han et al. 2017 [17]	4	2	3	9
Han et al. 2017 [18]	4	2	3	9
Shinohara et al. 2016 [19]	4	1	3	8
Sia et al. 2019 [20]	4	1	3	8
Nguyen et al. 2011 [21]	3	2	2	7
Demura et al. 2014 [22]	3	2	2	7
Noshchenko et al. 2011 [23]	4	1	2	7
Shah et al. 2018 [24]	3	2	2	7
Smith et al. 2012 [25]	4	2	2	8