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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: J Popul Econ. 2014 Mar 25;27(4):1145–1163. doi: 10.1007/s00148-014-0506-z

Table 5.

Test of Instrument Validity, Time Till First Birth—Orthogonalized

Mother’s Age at Mother’s Age at
Death/100 Death/100 Infant Mortality Infant Mortality
OLS OLS OLS OLS
(1) (2) (3) (4)
Time Till First Birth—Orthogonalized 0.001 0.001 0.001 0.005
(0.002) (0.001) (0.005) (0.006)
Year/100 −0.670*** −0.735*** 2.148*** 2.276***
(0.228) (0.179) (0.564) (0.575)
(Year/100)2/100 19.554*** 21.581*** −58.523*** −62.365***
(6.331) (4.954) (15.642) (15.948)
Mother’s Age at Birth/100 0.294*** 0.011 0.488*** 0.471***
(0.050) (0.041) (0.142) (0.152)
Father’s Age at Birth/100 −0.030 −0.034 0.136 0.136
(0.037) (0.031) (0.102) (0.108)
Father’s Age at Death/100 0.105*** 0.074*** −0.048 −0.036
(0.018) (0.014) (0.043) (0.047)
Male 0.044*** 0.043***
(0.012) (0.013)
Mother’s Age at Death/100 −0.193*** −0.067
(0.039) (0.055)

Father’s Occupation Y Y Y Y
Village Fixed Effects Y Y Y Y
Mother Survived until the Age of 40 N Y N Y
Time Till First Birth >269 Days Y Y Y Y
Observations 4,296 3,602 4,296 3,602
***

p<0.01,

**

p<0.05,

*

p<0.1.

Robust standard errors in parentheses.