Fig 1.
PRISMA flow diagram.
Fig 2.
Risk of bias summary.
Table 1.
Methodological characteristics of included trials.
Table 2.
Grading of evidence for different anthropometric and biochemical risk factors.
Fig 3.
Systolic blood pressure: Mean difference.
Table 3.
Effectiveness estimates of reported trials for different risk factors with sensitivity of results to study or effect size.
Fig 4.
Diastolic blood pressure: Mean difference.
Fig 5.
Funnel plot: Systolic blood pressure.