From: Perfusion index variations in clinically and hemodynamically stable preterm newborns in the first week of life
Study population characteristics
mean (SD)
Gestational age (weeks)
32.5 (2.1)
Weight (g)
1700 (401)
Length (cm)
41.1 (3.3)
Head circumference (cm)
29.9 (1.6)
Apgar score at 1 minute
8 (1)
Apgar score at 5 minutes
9 (1)