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. 2014 Jun 19;14:76. doi: 10.1186/1472-6874-14-76

Table 2.

Multivariate mixed effects model of perceived stress by study group over time

  Coefficient 95% conf. interval
Study group
  
  
  
Near Limit Abortion Group
 ref
 ref
 ref
First Trimester Abortion Group
 -0.57*
 -1.13
 -0.01
Parenting Turnaway Group
 1.02**
 0.34
 1.69
Time
  
  
  
Months
 -0.08
 -0.16
 0.00
Months2
 0.002
 -0.005
 0.008
Months3
 0.000
 0.000
 0.000
Study group by time interactions
  
  
  
First trimester x months
 0.10
 -0.03
 0.23
First trimester x months2
 -0.004
 -0.014
 0.006
First trimester x months3
 0.000
 0.000
 0.000
Parenting turnaway x months
 -0.31***
 -0.46
 -0.15
Parenting turnaway x months2
 0.02***
 0.01
 0.04
Parenting turnaway x months3
 -0.001***
 -0.001
 0.000
Covariates
  
  
  
Age
 0.126
 -0.01
 0.06
Race/ethnicity
  
  
  
White
 ref
 ref
 ref
Black
 0.114
 -0.08
 0.80
Hispanic/Latina
 0.660
 -0.38
 0.61
Other
 0.666
 -0.68
 0.44
Household composition
  
  
  
No other adult
 ref
 ref
 ref
Male partner
 0.041
 -0.93
 -0.02
Adult relative
 0.197
 -0.77
 0.16
Non-adult relative
 0.099
 -1.16
 0.10
Parity
  
  
  
Nulliparous
 ref
 ref
 ref
Baby under 1
 0.036
 0.04
 1.23
1+ previous births, no new baby
 0.353
 -0.24
 0.68
2+ previous births, no new baby
 0.900
 -0.52
 0.45
Mother's highest level of education
  
  
  
<high school
 ref
 ref
 ref
High school or GED
 0.443
 -0.72
 0.31
Associate’s, some college, tech school
 0.905
 -0.62
 0.55
College
 0.098
 -1.03
 0.09
Missing
 0.942
 -0.68
 0.73
School/working status
  
  
  
Not in school or employed
 ref
 ref
 ref
In school
 0.019
 -1.18
 -0.11
Employed
 <0.001
 -1.14
 -0.32
In school and employed
 0.020
 -1.17
 -0.10
History of depression
 <0.001
 1.29
 2.15
Experienced violence in past year
 0.001
 0.30
 1.13
History of child abuse/neglect
 0.001
 0.25
 1.04
Model constant 4.74*** 4.09 5.39

*p < .05, **p < .01, ***p < .001. ref = reference group, SD = standard deviation.