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Table 4 Variables contributing to the change of PSS sum score in the all-variable generalized linear model

From: Ketamine for prehospital trauma analgesia in a low-resource rural trauma system: a retrospective comparative study of ketamine and opioid analgesia in a ten-year cohort in Iraq

  All ISS >8
  Estimate (95 % CI) p Estimate (95 % CI) p
Intercept 1.02 (0.70–1.34) <.0001 1.62 (1.03–2.20) <.0001
Analgesia (pentazocine vs. no analgesia) 0.29 (0.06–0.52) 0.01 0.26 (−0.13–0.65) 0.19
Analgesia (ketamine vs. pentazocine) −0.04 (−0.24–0.16) 0.68 0.26 (−0.07–0.58) 0.12
Gender (male vs. female) −0.04 (−0.13–0.06) 0.48 −0.02 (−0.18–0.14) 0.82
Age (years) −0.01 (−0.01–0.00) 0.10 −0.01 (−0.02–0.00) 0.26
Time from injury to first medical assistance (hours) 0.01 (−0.07–0.08) 0.87 0.00 (−0.13–0.13) 0.99
Time from injury to arrival at the hospital (hours) 0.01 (−0.03–0.04) 0.59 0.00 (−0.06–0.05) 0.96
Injury severity score (ISS) 0.04 (0.03–0.06) <.0001 0.01 (−0.01–0.03) 0.20
Blunt type of injury 0.00 (−0.09–0.10) 0.97 −0.09 (−0.25–0.06) 0.24