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. Author manuscript; available in PMC: 2015 Feb 22.
Published in final edited form as: Nurs Res. 2004 Sep-Oct;53(5):304–313. doi: 10.1097/00006199-200409000-00005

TABLE 3.

Multilevel Model of Fixed and Random Effects for the Proportion of Engagement During Feeding Episodes

Unconditional Model (N = 114)
Dyad Model (N = 114)
Episode Model (N = 114)
Estimate (SE) Estimate (SE) Estimate (SE)
Fixed effects
 Constant 0.573 (0.043)* −2.088 (1.851) −1.552 (1.607)
Dyad variables
 WM 0.073 (0.032)* 0.044 (0.028)
 BW 0.000 (0.000) 0.000 (0.000)
 PCA 0.017 (0.028) −0.001 (0.025)
 BASEO2 0.018 (0.018) −0.012 (0.017)
Episode variables
 READY 0.133 (0.053)*
 EPIO2 0.001 (0.005)
 MEANO2 0.028 (0.008)*
 STILL 0.401 (0.079)*
 PH2a −0.111 (0.050)*
 PH3a −0.163 (0.053)*
Random effects
Dyad variation 0.023 (0.012) 0.012 (0.008) 0.012 (0.006)*
Episode variation 0.078 (0.011)* 0.078 (0.011)* 0.039 (0.006)*
−2*Log likelihood 52.025 45.125 −26.526
Difference in chi-square value 6.9, df 4 78.55 df 6
p = 0.141 p<.001

Note.

*

Indicates statistically significant at least at the .05 level.

a

Dummy coded with Phase 1 as referent.