Table 3. Subgroup analyses of tocotrienols on malondialdehyde level.

	n	WMD (95% CI)	p within group	p heterogeneity	I2 (%)
Study sample size
≥ 60	3	-0.36 (-1.52, 0.80)	0.546	0.001	86.0
< 60	3	-0.38 (-1.83, 1.06)	0.602	0.004	82.2
Study duration
≥ 6 months	3	-0.26 (-0.91, 0.40)	0.444	< 0.001	91.9
< 6 months	3	0.34 (-3.13, 2.46)	0.812	0.087	59.0
Dosage
≥ 400 mg/day	3	-0.90 (-1.20, -0.59)	< 0.001	0.165	44.6
< 400 mg/day	3	-0.33 (-1.08, 0.42)	0.393	0.003	82.7

Abbreviation: CI, confidence interval, WMD, weighted mean difference.