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. 2019 Jun 10;14(6):e0217623. doi: 10.1371/journal.pone.0217623

Table 3. Summary of study quality scores of the included cross-sectional and longitudinal cohort studies assessed by the Newcastle-Ottawa Scale (NOS).

Cardiovascular health risk factor
Type of discrimination (N = 67 Studies)
Mean quality score for selection
(max 4)
Mean quality score for comparability (max 2) Mean quality score for selection / exposure
(max 3)
Total mean quality score
(max 9)
Blood Pressure (n = 36)
    Race (n = 35) 2.8 2.0 1.7 6.5
    Multiple types (n = 1) 4.0 2.0 3.0 9.0
Heart rate variability / heart rate (n = 4)
    Race (n = 4) 3.3 1.7 2.2 7.2
Blood/saliva cardiovascular biomarkers (n = 13)
    Race (n = 7) 3.1 1.7 2.3 7.1
    Weight (n = 3) 2.7 2.0 2.3 7.0
    Sexual orientation (n = 2) 2.5 2.0 3.0 7.5
    Multiple types (n = 1) 3.0 2.0 3.0 8.0
Other cardiovascular health risk factors (n = 14)
    Race (n = 9) 3.6 2.0 2.7 8.2
    Weight (n = 3) 3.0 2.0 3.0 8.0
    Multiple types (n = 2) 2.5 2.0 2.0 6.5
Totals 3.1 1.9 2.5 7.5

Note. The scoring for each individual study can be found in S1 Table.