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. Author manuscript; available in PMC: 2018 Jul 17.
Published in final edited form as: J Popul Econ. 2016 Mar 31;29(3):883–910.

Table –C3.

Robustness Results

VARIABLES Hormonal Age
Optimism (Factor)
Teen Mother
Optimism (Factor)
Hormonal Age
Optimistic About the Future
Teen Mother
Optimistic About the Future
Hormonal Age
Overall Expect Good Things
Teen Mother
Overall Expect Good Things
Live Birth −0.048
(0.077)
−0.048
(0.091)
0.251
(0.280)
0.238
(0.346)
−0.044
(0.098)
−0.094
(0.115)
Age (at wave 4) 0.008
(0.014)
0.010
(0.014)
0.021
(0.057)
0.013
(0.055)
0.015
(0.021)
0.019
(0.021)
Conception before 15 0.010
(0.091)
−0.019
(0.092)
−0.024
(0.459)
−0.024
(0.452)
−0.023
(0.136)
−0.052
(0.134)
Black −0.191***
(0.056)
−0.188***
(0.058)
0.787***
(0.238)
0.763***
(0.245)
−0.208**
(0.083)
−0.198**
(0.084)
Hispanic −0.206***
(0.069)
−0.205***
(0.068)
0.880***
(0.236)
0.878***
(0.245)
−0.174*
(0.101)
−0.166*
(0.099)
Smoke during pregnancy 0.153***
(0.058)
0.155**
(0.060)
−0.611**
(0.265)
−0.590**
(0.274)
0.221**
(0.095)
0.224**
(0.093)
Married −0.048
(0.060)
−0.050
(0.061)
0.540**
(0.230)
0.552**
(0.229)
−0.027
(0.085)
−0.028
(0.086)
Maternal Education −0.017
(0.012)
−0.018
(0.012)
0.191***
(0.049)
0.184***
(0.048)
−0.027*
(0.015)
−0.028*
(0.015)
Parent in Household (dummy) −0.049
(0.043)
−0.035
(0.047)
−0.051
(0.195)
−0.023
(0.210)
0.002
(0.070)
0.025
(0.073)
Hormone Median −0.071
(0.246)
−0.204
(0.621)
0.011
(0.319)
Hormone × Live Birth (interaction) 0.143
(0.263)
−0.331
(0.736)
0.053
(0.354)
Teen Mom −0.082
(0.156)
−0.054
(0.419)
−0.229
(0.174)
(Missing) Teen mom −0.058
(0.068)
0.014
(0.298)
−0.104
(0.091)
Teen Mom × Live Birth (interaction) 0.044
(0.153)
0.075
(0.459)
0.205
(0.169)
Constant 0.209
(0.420)
0.193
(0.406)
10.644***
(1.760)
10.881***
(1.722)
2.139***
(0.645)
2.085***
(0.642)
Observations 688 694 691 697 690 696
R-squared 0.052 0.053 0.077 0.069 0.035 0.038

Robust standard errors in parentheses

***

p<0.01,

**

p<0.05,

*

p<0.10