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Table 6 Cronbach’s Alpha, Corrected Item-Total Correlation and Alpha if Item Deleted calculated for the modified behavioural subscale of the Bernese Pain Scale for Neonates

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

  Heel Stick Phase 1 Heel Stick Phase 2 Heel Stick Phase 3 Heel Stick Phase 4 Heel Stick Phase 5
Median (Range) Median (Range) Median (Range) Median (Range) Median (Range)
Cronbach’s α 0.876 (0.841–0.922) 0.848 (0.778–0.885) 0.845 (0.762–0.893) 0.815 (0.725–0.884) 0.825 (0.669–0.852)
  rcor α** rcor α** rcor α** rcor α** rcor α**
Crying 0.772 0.850 0.693 0.831 0.689 0.822 0.678 0.768 0.957 0.783
(0.680–0.875) (0.801–0.916) (0.572–0.752) (0.711–0.881) (0.559–0.777) (0.705–0.881) (0.427–0.772) (0.689–0.880) (0.297–0.698) (0.761–0.846)
Facial expression 0.817 0.773 0.774 0.736 0.781 0.703 0.668 0.696 0.778 0.653
  (0.793–0.907) (0.700–0.837) (0.704–0.854) (0.598–0.783) (0.699–0.867) (0.550–0.781) (0.656–0.845) (0.444–0.778) (0.663–0.851) (0.296–0.682)
Posture 0.741 0.829 0.737 0.790 0.683 0.809 0.694 0.753 0.647 0.781
(0.679–0.849) (0.786–0.894) (0.569–0.794) (0.718–0.846) (0.547–0.776) (0.695–0.866) (0.567–0.793) (0.617–0.822) (0.521–0.687) (0.519–0.840)
  1. Note. Median = Median of the coefficients calculated for each rater separately; Range = Range of the five coefficients calculated for each rater; *rcor = Corrected Item-Total Correlation; **α = Cronbach’s Alpha if Item deleted; Number of observations per measurement point N = 94–143