<p>RB, “Risk of Bias”; Manual for assigning “yes”, “unclear,” and “no” available in Appendix B in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0135192#pone.0135192.s002" target="_blank">S1 File</a>. Percents may not sum to exactly 100 due to rounding</p><p>Study quality items assessed in addition to Newcastle-Ottawa Scale.</p
The maximal score for Newcastle-Ottawa scale is 9 stars: 4 stars for the selection process, 2 stars ...
The risk of bias assessment for each study according to Newcastle-Ottawa quality assessment scale.</...
Quality assessment using Newcastle-Ottawa scale adapted for cross-sectional studies.</p
<p>Note: “1”represented got 1 star</p><p>Quality assessment of included studies using Newcastle-Otta...
<p>Quality Assessment of included studies based on the Newcastle-Ottawa Scales.</p
Quality assessment of included studies based on the Newcastle-Ottawa Scale (NOS).</p
Quality assessment: The Newcastle Ottawa Scale [NOS] for assessing the quality of nonrandomized stud...
<p>Quality of the studies included in the meta-analysis assessed with Newcastle-Ottawa scale (n = 9)...
<p>A study can be awarded a maximum of one star (*) for each numbered item within the Selection and ...
<p>S1: Selection1-is the case definition adequate; S2: Selection2-representativeness of the cases; S...
<p>Newcastle-Ottawa-Scale scores for the quality assessment of including studies.</p
In newcastle-ottawa scale, studies with 9 stars were considered high quality.</p
<p>Quality assessment for all the included studies according to the Newcastle-Ottawa Scale.</p
<p>Quality of included nested case-control studies (Newcastle-Ottawa Scale, NOS).</p
Quality assessment of the observational studies based on the Newcastle-Ottawa Scale.</p
The maximal score for Newcastle-Ottawa scale is 9 stars: 4 stars for the selection process, 2 stars ...
The risk of bias assessment for each study according to Newcastle-Ottawa quality assessment scale.</...
Quality assessment using Newcastle-Ottawa scale adapted for cross-sectional studies.</p
<p>Note: “1”represented got 1 star</p><p>Quality assessment of included studies using Newcastle-Otta...
<p>Quality Assessment of included studies based on the Newcastle-Ottawa Scales.</p
Quality assessment of included studies based on the Newcastle-Ottawa Scale (NOS).</p
Quality assessment: The Newcastle Ottawa Scale [NOS] for assessing the quality of nonrandomized stud...
<p>Quality of the studies included in the meta-analysis assessed with Newcastle-Ottawa scale (n = 9)...
<p>A study can be awarded a maximum of one star (*) for each numbered item within the Selection and ...
<p>S1: Selection1-is the case definition adequate; S2: Selection2-representativeness of the cases; S...
<p>Newcastle-Ottawa-Scale scores for the quality assessment of including studies.</p
In newcastle-ottawa scale, studies with 9 stars were considered high quality.</p
<p>Quality assessment for all the included studies according to the Newcastle-Ottawa Scale.</p
<p>Quality of included nested case-control studies (Newcastle-Ottawa Scale, NOS).</p
Quality assessment of the observational studies based on the Newcastle-Ottawa Scale.</p
The maximal score for Newcastle-Ottawa scale is 9 stars: 4 stars for the selection process, 2 stars ...
The risk of bias assessment for each study according to Newcastle-Ottawa quality assessment scale.</...
Quality assessment using Newcastle-Ottawa scale adapted for cross-sectional studies.</p