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Table 4 Pain intensity assessment and opioid dosage requirements of the 87 patients

From: A systematic review of the risk factors for clinical response to opioids for all-age patients with cancer-related pain and presentation of the paediatric STOP pain study

  mean ± SD
PIt0 (Pain Intensity at t0) 4.34 ± 2.17
PI24h (Pain intensity at t24h) 2.04 ± 2.56
PIend (Pain intensity at tend) 1.07 ± 2.19
Timetot (time to the minor PI) 140.43 ± 63.89
  N %
PIt0 (grouped)
 ≤4 47 54.02
 > 4 40 45.98
ΔVAS (PIt0 - PIt24h; grouped)
  ≤ 2 46 52.87
  > 2 39 44.83
Responders (PIend equal to 0)
 No 23 26.44
 Yes 64 73.56
Pain location
 Abdominal 12 13.79
 Oral cavity 43 49.43
 Skeletal - Muscle 14 16.09
 Other 18 20.69
Drug
 morphine 60 68.97
 tramadol 19 21.84
 oxycodone 2 2.30
 codeine 2 2.30
 more than one 4 4.60
Dose24h (mg/kg)
  ≤ 0.2 24 27.59
 0.2- ≤ 0.42 20 22.99
 0.42- ≤ 0.50 22 25.29
  > 0.50 19 21.84
Missing 2 2.30
Dosetot (mg/kg)
  ≤ 1.2 21 24.14
 1.2- ≤ 2.16 20 22.99
 2.16- ≤ 3.42 24 27.59
  > 3.42 22 25.29
  1. PI Pain Intensity