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Table 3 The prevalence of fentanyl treatment and potential risk factors of non-treatment (multivariat logistic regression and estimates as odds ratios)

From: Prehospital intravenous fentanyl to patients with hip fracture: an observational cohort study of risk factors for analgesic non-treatment

  n = 2140 Fentanyl administered, % (95% CI) Odds Ratio (95% CI)
Crude Adjusteda
Age (years), n = 2140
   < 74 362 34.3 (29.3-39.2) 1 (reference) 1 (reference)
 75-79 338 30.8 (25.8-35.7) 0.85 (0.62-1.17) 0.80 (0.54-1.20)
 80-84 465 26.5 (22.4-30.5) 0.69 (0.51-0.93) 0.62 (0.43-0.91)
 85-89 527 24.1 (20.4-27.8) 0.61 (0.45-0.82) 0.54 (0.38-0.80)
   > 90 448 23.7 (19.7-27.6) 0.59 (0.44-0.81) 0.65 (0.45-0.97)
Sex, n = 2140
 Female 1488 29.0 (26.7-31.3) 1 (reference) 1 (reference)
 Male 652 23.3 (20.1-26.6) 0.74 (0.60-0.92) 0.64 (0.48-0.84)
CCI score, n = 2140
 0 875 30.9 (27.8-33.9) 1 (reference) 1 (reference)
 1 528 23.5 (19.9-27.1) 0.69 (0.54-0.88) 0.64 (0.47-0.87)
 2 340 25.0 (20.4-29.6) 0.75 (0.56-0.99) 0.76 (0.54-1.09)
 3+ 397 26.4 (22.1-30.8) 0.81 (0.62-1.05) 0.83 (0.59-1.17)
Housing, n = 1967
 Own home 1328 30.5 (28.0-33.0) 1 (reference) 1 (reference)
 OHATI 210 34.8 (28.3-41.3) 1.21 (0.89-1.65) 1.60 (1.09-2.34)
 Institution 429 14.0 (10.7-17.3) 0.37 (0.27-0.50) 0.61 (0.43-0.88)
BMI, n = 2140
 Normal 1051 27.0 (24.3-29.7) 1 (reference) 1 (reference)
 Underweight 191 26.7 (20.4-33.0) 0.98 (0.69-1.39) 1.00 (0.65-1.54)
 Overweight 521 27.8 (24.0-31.7) 1.04 (0.82-1.31) 1.07 (0.82-1.43)
 Obeseb 377 27.6 (23.1-32.1) 1.03 (0.79-1.34) 1.07 (0.73-1.56)
Fracture displacement, n = 1981
 Yes 230 23.0 (17.6-28.5) 1 (reference) 1 (reference)
 No 1717 27.5 (25.4-29.7) 0.79 (0.60-1.09) 1.11 (0.74-1.66)
 Unspecified 34 38.2 (21.0-55.4) 1.63 (0.81-3.28) 1.67 (0.68-4.08)
Type of fracture, n = 2140
 Subtrochanteric 182 39.0 (31.9-46.2) 1 (reference) 1 (reference)
 Pertrochanteric 872 29.5 (26.4-32.5) 0.65 (0.47-0.91) 0.77 (0.51-1.19)
 Medial 1086 23.6 (21.0-26.1) 0.48 (0.35-0.67) 0.60 (0.40-0.92)
Prior consultation with GP, n = 2140
 No 1622 30.4 (28.2-32.6) 1 (reference) 1 (reference)
 Yes 518 17.6 (14.3-20.9) 0.49 (0.38-0.63) 0.74 (0.52-1.02)
EMCC triage level, n = 1895
 A (highest) 145 37.9 (29.9-45.9) 1 (reference) 1 (reference)
 B 1246 32.9 (30.3-35.5) 0.80 (0.56-1.15) 1.00 (0.66-1.52)
 C 504 11.1 (8.4-13.9) 0.20 (0.13-31.6) 0.29 (0.18-0.49)
Time with ambulance personnelc (minutes), n = 1878
  < 20 174 1.7 (0.0-3.7) 0.02 (0.01-0.06) 0.01 (0.00-0.06)
 20-29 306 12.4 (8.70-16.1) 0.15 (0.10-0.22) 0.14 (0.09-0.22)
 30-39 362 21.0 (16.8-25.2) 0.28 (0.20-0.39) 0.27 (0.18-0.39)
 40-49 377 30.0 (25.3-34.6) 0.44 (0.33-0.61) 0.45 (0.32-0.63)
 50-59 337 38.0 (32.8-43.2) 0.64 (0.47-0.87) 0.67 (0.47-0.95)
   > 60 322 49.1 (43.6-54.6) 1 (reference) 1 (reference)
Yeard, n = 2140
 2011 360 19.7 (15.6-23.9) 1 (reference) 1 (reference)
 2012 773 29.5 (26.3-32.7) 1.70 (1.26-2.30) 1.81 (1.21-2.70)
 2013 666 28.5 (25.1-32.0) 1.62 (1.19-2.21) 1.73 (1.15-2.60)
 2014 341 27.9 (23.1-32.6) 1.57 (1.11-2.23) 1.98 (1.25-3.14)
  1. CCI Charlson Comorbidity Index, OHATI own home affiliated to an institution, BMI Body Mass Index, GP general practitioner, EMCC Emergency Medical Communication Center. The number of complete cases for each variable is given in the left column
  2. aMutually adjusted for the other variables in the table. Adjustments are categorical besides age (continuous) and time with ambulance (restricted cubic splines)
  3. bFour levels of body mass index were defined as < 18.5 (underweight), 18.5-24.9 (normal weight), 25-29.9 (overweight) and > 30.0 (obese)
  4. cDefined as the time from ambulance arrival on scene until hospital admission
  5. d2011 and 2014 contain patient information from 6-month periods