The Role of Mean Platelet Volume as a Predictor of Mortality in Critically Ill Patients: A Systematic Review and Meta-Analysis

Table 2

Heterogeneity of pool mean differences of MPV in all studies and subgroup of patient type, study type, and mortality rate.

	Number of studies	square (%)	SMD	(95% confidence interval)	value
All studies	11	82.9	0.169	(−0.040 to 0.378)	0.112
Patient types
Sepsis	6	86.7	0.166	(−0.215 to 0.546)	0.393
All ICU	5	75.9	0.169	(−0.040 to 0.378)	0.160
Study type
Prospective	3	90.0	0.133	(−0.663 to 0.930)	0.743
Retrospective	8	81.8	0.169	(−0.040 to 0.378)	0.120
Mortality rate
More than 60%	3	89.8	0.044	(−0.692 to 0.781)	0.906
30–60%	3	1.1	0.060	(−0.085 to 0.205)	0.418
Up to 30%	5	77.3	0.321	(0.043 to 0.598)	0.023

SMD: standardized mean difference.