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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Early Hum Dev. 2017 Sep 11;115:51–59. doi: 10.1016/j.earlhumdev.2017.09.013

Table 4.

Determinants of Explained Variability in Infant Positive Affect

Modela Primary exposure and Independent variables RSS R2
0 Intercept only 154,519 NA
1 SFP episode, infant age, infant gender, and maternal education, marital status, income, and BDI score 140,393 0.091
2 Study group, SFP episode, infant age, infant gender, and maternal education , marital status, income, and BDI score 130,038 0.158
3 Contingent interaction, SFP episode, infant age, infant gender, and maternal education, marital status, income, and BDI score 50,875 0.671
4 Attention seeking, SFP episode, infant age, infant gender, and maternal education, marital status, income, and BDI score 62,700 0.594
a

Infant positive affect is the outcome of interest in all models RSS, Residual sum of squares

R2, percent of the total variance explained by the model