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Table 4 Characteristics of children and adolescents > 30 kg

From: Do epinephrine auto-injectors have an unsuitable needle length in children and adolescents at risk for anaphylaxis from food allergy?

Characteristics Total
(n = 100)
Patients with STBDmax t test
p value
≥15.2 mm
(n = 97)
<15.2 mm
(n = 3)
Age (months). median (IQR) 168 (144–192) 168 (144–192) 144 (114–144) 0.07
Males. n (%) 60 (60) 57 (58.8) 3 (100) ns
Weight (kg). mean (SD) 54.5 (15.4) 55 (15.3) 36.4 (6.0) 0.012
Height (m). mean (SD) 1.62 (0.14) 1.62 (0.14) 1.41 (0.03) 0.041
BMI (kg/m2). mean (SD) 20.5 (3.9) 20.5 (3.9) 18.4 (3.9) ns
STMDmax (mm). mean (SD) 7.4 (3.8) 7.5 (3.8) 4.6 (0.1) ns
STMDmin (mm). mean (SD) 8.4 (4.4) 8.5 (4.5) 5.4 (0.4) ns
STBDmax (mm). mean (SD) 25.5 (7.9) 25.8 (7.7) 13.5 (0.5) 0.0075
STBDmin (mm). mean (SD) 41.7 (8.9) 42.0 (8.8) 30.1 (4.8) 0.022
  1. Data on one needle length of 15.2 mm are given. Those with STBDmax < 15.2 mm. i.e., at risk of penetrating the femur and those with >15.2 mm STBDmax. The differences between groups was tested by a two-tailed t-test. The inter-quartile ratio (IQR) percentage (%) and standard deviations (SD) are given within brackets