Table C.3: Quantile regression Dependent variable: birth weight (grams) Quantile .15 .25 .50 .75 .85 D (nonsmoking) 444.87 462.54 673.80 259.75 365.19 ( 3.32) ( 2.76) ( 2.87) ( 2.77) ( 3.29) D*Hispanic -72.78 -195.84 -502.80 -357.08 -416.70 ( 0.17) ( 0.35) ( 0.25) ( 0.56) (0 .29) D*black 259.65 474.71 46.40 -244.92 -256.61 ( 0.64) ( 0.25) (0.53) ( 2.14) (0 .34) D*high school grad 158.91 317.26 203.20 34.25 36.17 ( 0.24) ( 0.17) (0 .30) (0 .24) (0 .38) D*some college 208.87 365.21 347.40 149.00 85.70 ( 0.45) ( 0.35) (0.52) (0 .38) (0 .46) D*college graduate -34.09 87.05 305.20 542.25 324.17 ( 0.82) ( 0.78) (0.83) ( 0.93) ( 1.56) D*post graduate 97.57 233.63 260.60 29.1667 -209.25 ( 2.40) ( 1.32) ( 1.16) ( 1.08) ( 2.14) D*age 2125 276.78 65.91 296.00 22.25 107.33 ( 0.24) ( 0.24) (0.32) (0.31) (0.39) D*age 2630 -71.96 -224.44 -332.20 -205.25 -199.94 (0.40) (0.32) (0.47) (0.32) (0.39) D*age 3135 -35.91 -320.73 -325.40 -304.25 39.17 (0.58) ( 0.62) (0.64) (0.52) (0.77) D*age 3640 16.78 -9.80 245.00 293.58 661.41 (0.19) ( 0.22) (0.16) ( 0.17) (0.24) D*age 41+ 411.30 -238.42 -403.80 22.08 -117.84 ( 1.15) ( 2.99) ( 1.56) ( 4.52) (0.64) Married 109.26 44.59 40.54 -34.00 -255.35 (0.10) (0.09) (0.07) (0.10) (0.10) High school grad. 160.78 140.34 53.97 -28.00 -118.73 (0.31) (0.30) (0.21) (0.30) (0.30) 79