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Table 2 NRS scores for pain at rescue scene and at admission to hospital.

From: The effect of combined treatment with morphine sulphate and low-dose ketamine in a prehospital setting

  NRS at scene NRS at admission hospital
  M-group MK-group M-group MK-group
Mean 8.5 7.5 5.4* 3.1*
Median 9.0 7.5 5.0* 3.0*
SD. 1.6 1.8 1.9 1.4
Percentiles 25 7.0 6.0 4.0 2.0
50 9.0 7.5 5.0 3.0
75 10.0 9.5 7.0 3.8
  1. Statistical differences were found between the M-group and the MK-group (* = p < 0.05).