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. 2014 Jun 23;9(6):e100686. doi: 10.1371/journal.pone.0100686

Table 2. Mean standardised maternal protectiveness scores at Wave 2 (6–7 years) and Wave 3 (8–9 years) by demographic characteristics, and adjusted multivariate regression coefficients.

Wave 2 (6–7 Years) Wave 3 (8–9 Years)
Factor N Mean Score (SE) Regression Coefficient p-value N Mean Score (SE) Regression Coefficient p-value
Mother's highest education
Post-school 1575 −0.20 (0.03) Ref 1660 −0.22 (0.03) Ref
Year 12 459 −0.03 (0.05) 0.08 .192 496 0.02 (0.05) 0.15 .012
Less than Year 12 1130 0.17 (0.04) 0.22 <.001 1254 0.13 (0.03) 0.23 <.001
Maternal employment pattern
Not working 345 0.28 (0.06) Ref 387 0.19 (0.06) Ref
Some part-time 593 −0.01 (0.05) −0.22 .008 647 0.02 (0.05) −0.13 .120
Mostly part-time 1059 −0.05 (0.03) −0.19 .008 1129 −0.05 (0.03) −0.15 .039
Mostly full-time 1144 −0.09 (0.03) −0.22 .002 1234 −0.08 (0.03) −0.16 .012
Mothers age at first child
30 years or more 1131 −0.13 (0.03) Ref 1162 −0.10 (0.03) Ref
25–29 years 1297 −0.05 (0.03) 0.02 .677 1376 −0.06 (0.03) 0.00 .960
20–24 years 578 0.17 (0.04) 0.18 .003 668 0.08 (0.04) 0.08 .188
Less than 19 years 155 0.34 (0.10) 0.23 .023 199 0.24 (0.08) 0.13 .155
No. of waves maternal mental health problem
None 2358 −0.06 (0.03) Ref 2524 −0.11 (0.02) Ref
One-Two 675 0.14 (0.05) 0.13 .010 736 0.17 (0.04) 0.22 <.001
Three-Four 138 0.14 (0.09) 0.16 .105 163 0.32 (0.10) 0.38 <.001
Household income
$2000 or more per week 422 −0.34 0.05) Ref 447 −0.32 (0.04) Ref
$1000–$1999 per week 729 −0.09 (0.04) 0.15 .018 772 −0.10 (0.04) 0.12 .038
$600–$999 per week 1348 0.04 (0.03) 0.19 .003 1464 0.04 (0.03) 0.18 .001
Up to $599 per week 495 0.16 (0.06) 0.18 .023 548 0.11 (0.05) 0.14 .046
Neighborhood disadvantage (SEIFA)
Least disadvantaged tertile 1027 0.16 (0.04) Ref 945 −0.21 (0.04) Ref
Middle tertile 1235 −0.01 (0.04) 0.08 .147 1336 −0.01 (0.03) 0.09 .056
Most disadvantaged tertile 909 −0.20 (0.04) 0.15 .017 1142 0.12 (0.04) 0.14 .016

Included in initial models but removed due to non-significance: Maternal BMI, family structure, position of child amongst siblings and child gender.