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. Author manuscript; available in PMC: 2009 Jan 1.
Published in final edited form as: J Neonatal Nurs. 2008;14(1):9–16. doi: 10.1016/j.jnn.2007.11.001

Fixed Component.

Wald Test LR Test
Effect Estimate SE z χ2 p χ2 p
Intercept 17.15 1.79 9.60 92.08 < .01 54.04 < .01
D1 -2.80 2.85 -.98 .97 .33 .96 .33
D2 -5.03 2.29 -2.20 4.84 < .05 4.64 < .05

Intercept = estimated NNS AMP mean for ‘Control’ group

Intercept + D1 = estimated NNS AMP mean for ‘RDS1’ group

Intercept + D2 = estimated NNS AMP mean for ‘RDS2’ group