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Table 1 Demographic and medical characteristics of the total sample and the four gestational age groups

From: The influence of gestational age in the psychometric testing of the Bernese Pain Scale for Neonates

   Gestational age groups
Total Sample Extremely preterm neonates Very preterm neonates Moderate to late preterm neonates Full-term neonates
Sample, n (%) 154 (100) 50 (32.5) 45 (29.2) 38 (24.7) 21 (13.6)
Sex, n (%)
 - Male 87 (56.5) 31 (62.0) 23 (51.1) 20 (52.6) 13 (61.9)
GA at birth in weeks, mean (SD) 30.85 (4.5) 26.23 (1.2) 29.44 (1.0) 34.21 (1.0) 38. 81 (1.3)
Birth weight in grams, mean (SD) 1630.10 (934.3) 851.40 (196.4) 1285.11 (328.2) 2093.68 (377.5) 3384.52 (811.6)
Number of comorbidities, mean (SD) 5.70 (4.4) 10.06 (4.2) 5.44 (2.4) 2.66 (1.4) 1.38 (1.1)
CRIB score, mean (SD) 3.76 (3.9) 7.50 (3.7) 3.24 (2.8) 1.05 (1.7) 0.86 (1.6)
Way of delivery, n (%)
 - Vaginal-spontan 36 (23.4) 10 (20.0) 4 (8.9) 13 (34.2) 9 (42.9)
 - Vaginal-operativ 4 (2.6) 0 (0) 1 (2.2) 2 (5.3) 1 (4.8)
 - Planned c-section 23 (14.9) 3 (6.0) 8 (17.8) 7 (18.4) 5 (23.8)
 - Emergency c-cection 91 (59.1) 37 (74.0) 32 (71.1) 16 (42.1) 6 (28.6)
Number of birth, mean (SD)
 - Single 104 (67.5) 43 (86.0) 20 (44.4) 21 (55.3) 20 (95.2)
 - One of twins 44 (28.6) 4 (8.0) 22 (48.9) 17 (44.7) 1 (4.8)
 - One of triplet 6 (3.9) 3 (6.0) 3 (6.7) 0 (0) 0 (0)
Day of life at first measure point, mean (SD) 3.95 (2.0) 4.80 (2.2) 3.56 (1.9) 3.18 (1.0) 4.19 (2.6)
  1. Note. CRIB Clinical Risk Index for Babies