Figure 1.
Flow diagram of the process of article selection for meta-analysis.
Table 1.
Characteristic of experimental trials included in the meta-analysis.
Figure 2.
Forest plot of randomised controlled trials investigate the effect of vitamin E supplementation on HbA1c.
Figure 3.
Forest plot of randomised controlled trials investigate the effect of vitamin E supplementation on fasting glucose.
Figure 4.
Forest plot of randomised controlled trials investigate the effect of vitamin E supplementation on fasting insulin.
Table 2.
Subgroup analyses of HbA1c, fasting glucose and fasting insulin stratified by previously defined study characteristics.
Table 3.
Summary of effect sizes (weighted mean difference) for secondary outcomes.
Table 4.
Quality assessment of included studies.