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Table 2 Subgroup analysis of postoperative hemoglobin decline

From: The efficacy of a thrombin-based hemostatic agent in primary total knee arthroplasty: a meta-analysis

Outcome or subgroup Studies Effect estimate
   χ 2 I2 (%) MD 95% CI P value
Cemented prosthesis 3 10.31 81 −0.62 [−1.22,−0.03] 0.006
Total dose = 10 ml 3 3.03 34 −0.52 [−0.77,−0.26] 0.22
Duration of drainage 3 3.03 34 −0.52 [−0.77,−0.26] 0.22