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Table 2 Central tendencies and coefficient of variances of physiological variables before, during and after KC intervention

From: Cerebral oxygenation responses during kangaroo care in low birth weight infants

Variables Measures Before KC During KC After KC
Heart rate (bpm) Mean 149.4 ± 6.3 150.0 ± 10.0 150.4 ± 8.7
  CV 6.8 ± 3.2 4.6 ± 1.3* 7.5 ± 4.7 †
Respiratory rate (bpm) Mean 39.4 ± 8.9 44.0 ± 5.1** 39.7 ± 7.9 † †
  CV 24.1 ± 5.4 22 ± 6.7 19.7 ± 7.6
SpO 2 (%) Mean 98.0 ± 1.3 97.6 ± 2.5 97.5 ± 1.7
  CV 2.3 ± 1.4 1.5 ± 0.9 2.9 ± 2.4
Left-rSO 2 (%) Mean 46.8 ± 5.6 47.3 ± 6.1 47.5 ± 7.3
  CV 6.6 ± 4.1 5.8 ± 3.3 4.1 ± 1.6
Right-rSO 2 (%) Mean 48.6 ± 6.9 49.1 ± 9.4 47.8 ± 6.9
  CV 7.2 ± 4.6 7.2 ± 5.5 5.6 ± 2.3
Body temperature, (°C) Mean 37.0 ± 0.2*** 37.3 ± 0.3  
  Median (range) 37.1 (36.6 – 37.4) 37.3 (36.8 – 37.4)  
  1. Data were expressed as mean ± SD or median (range). * p < 0.05, ** p < 0.01, *** p < 0.001, before versus during KC and † p < 0.05, † † p < 0.01, during versus after KC. CV: coefficient of variance, rSO2: regional cerebral oxygenation.