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Table 3 The pooled RR values under various APACHE II scores

From: Unfractionated heparin improves the clinical efficacy in adult sepsis patients: a systematic review and meta-analysis

APACHE II cut-off Studies Participants RR (95% CI) P
APACHE II ≤ 13 3 399 0.81 [0.53, 1.26] 0.36
APACHE II > 13 9 1996 0.82 [0.71, 0.94] 0.006
APACHE II ≤ 15 5 498 0.74 [0.51, 1.07] 0.11
APACHE II > 15 7 1897 0.83 [0.72, 0.96] 0.01
APACHE II ≤ 17 7 695 0.63 [0.47, 0.86] 0.003
APACHE II > 17 5 1700 0.88 [0.76, 1.03] 0.10
APACHE II ≤ 19 8 743 0.64 [0.47, 0.86] 0.003
APACHE II > 19 4 1652 0.88 [0.76, 1.03] 0.11
APACHE II ≤ 13 4 419 0.82 [0.55, 1.24] 0.36
13 < APACHE II ≤ 17 3 276 0.46 [0.29, 0.74] 0.001
APACHEII > 17 5 1700 0.88 [0.76, 1.03] 0.10
Total 12 2395 0.82 [0.71, 0.94] 0.004
  1. APACHE II Acute Physiology and Chronic Health Evaluation II, RR Relative risk