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Month of birth was used for the randomization.
Month of birth influences the risk of developing several diseases.
Several recent studies have reported a causal association between stature and month of birth.
Data from phonics checks also showed stark differences in results based on month of birth.
In theory, month of birth is an instrument that can help identify the effects of early growth on adult health, independent of more recent life course factors.
A scientific study found 17 of 19 white lion cubs born in an Italian zoo were stillborn or died within a month of birth.
They found that the chance of a child dying within a month of birth doubled if the child's paternal grandmother was alive.
In the data, the year and month of birth is reported for each family member.
18I determine age of the spouse through questions regarding the spouse's year and month of birth.
It has no causal effects on earnings because the month of birth is random (Angrist and Krueger 2001, p. 74); therefore, there is no convincing, direct causal path between the month of birth and earnings.
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Published research has shown that month-of-birth variations modulate the incidence of adult human diseases.
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