Reference: Abrevaya (2001), Koenker and Hallock (2001)

Data: June, 1997, Detailed Natality Data of the US. Live, singleton births, with mothers recorded as either black or white, between 18-45, and residing in the U.S. Sample size: 198,377.

Dependent Variable: Infant Birthweight (in grams)

Covariates:Family Income Education Mother's Prenatal Care Mother's Smoking Mother's Age

Mother's Weight Gain

If you want to look at the effect of the women's age on the baby's being at extreme weight (either very high or very low), what type of regression is most useful ?

Group of answer choices

a. Quantile regression at lower quantile (0.25 or 0.10)

b. Quantile regression at higher quantile (0.75 or 0.90)

c. Quantile regression at lower and upper end (example .25 and .75 )