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Table 2 Inter-group comparison of respiratory status over time (Silverman-Anderson scores)

From: Transforming neonatal nursing: a randomized controlled trial comparing kangaroo care and standard protocols for survival in preterm infants with respiratory distress syndrome

Time point

KMC group (n = 120)

Standard care group (n = 120)

Mean difference (95% CI)

Effect size (Cohen’s d)

Baseline

4.2 (1.0) [1]

4.3 (0.9) [1]

−0.1 (−0.33, 0.13)

0.10

24 h

3.8 (0.9) [2]

4.1 (1.0) [1]

−0.3 (−0.53, − 0.07)*

0.31

48 h

3.3 (0.8) [1]

3.8 (0.9) [2]

−0.5 (−0.72, − 0.28)**

0.59

72 h

2.8 (0.7) [2]

3.5 (0.8) [1]

−0.7 (−0.91, − 0.49)**

0.93

Day 7

2.1 (0.6) [3]

3.0 (0.7) [2]

−0.9 (−1.08, − 0.72)**

1.38

Pre-discharge

1.5 (0.5) [1]

2.4 (0.6) [2]

−0.9 (−1.06, − 0.74)**

1.65

Time effect analysis

Time effect

F-statistic

p-value

Partial η²

Time

245.63

<0.001

0.51

Group

38.42

<0.001

0.14

Time × group

42.75

<0.001

0.15

  1. SAS Silverman Anderson score; SD standard deviation; CI confidence interval; η² partial eta squared
  2. 1Cohen’s d effect size
  3. 2Numbers in square brackets [n] indicate missing data
  4. p < 0.05 ** p < 0.001
  5. Abbreviations: SAS = Silverman Anderson Score; SD = Standard Deviation; CI = Confidence Interval; %2 = Partial eta squared
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BMC Nursing

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