Table A9.

Sample selection test results: child’s at-school dietary quality equation

Dependent Variable: HEI-2010	Pre-HHFKA (2009–12)	Post-HHFKA (2013–16)
One school meal (HEI points)	0.09	4.15***
	(0.91)	(0.93)
Day1, Monday	−9.62*	2.87
	(5.72)	(5.38)
Day1, Tuesday	−7.66	−1.75
	(5.44)	(5.58)
Day1, Wednesday	−9.07*	−0.36
	(5.32)	(5.45)
Day1, Thursday	−7.41	−2.88
	(5.37)	(5.39)
Day1, Friday	−8.78*	−2.57
	(5.25)	(5.26)
Day1, Saturday	−7.82	9.50**
	(7.95)	(3.90)
Day2, Sunday	−3.09	−8.51
	(7.56)	(5.23)
Day2, Monday	−8.02	0.01
	(5.19)	(5.06)
Day2, Tuesday	−6.16	−0.62
	(5.40)	(5.28)
Day2, Wednesday	−6.34	−0.00
	(5.33)	(5.90)
Day2, Thursday	−6.79	−2.44
	(5.74)	(5.54)
Day2, Friday	−6.97	−4.09
	(5.31)	(5.32)
Day2, Saturday	0.00	0.00
	(.)	(.)
Inverse Mills ratio	−2.04	−0.86
	(1.62)	(1.87)
Log child’s age	−4.34***	−2.73**
	(1.25)	(1.31)
Female	0.34	−1.47
	(0.85)	(0.96)
Hispanic	2.73	0.44
	(1.78)	(1.38)
Non-Hispanic White	0.57	−1.01
	(1.85)	(1.49)
Non-Hispanic Black	2.97*	−0.31
	(1.77)	(1.41)
Percent poverty (130–185)	−1.89	1.20
	(1.19)	(1.40)
Percent poverty (>185)	−1.52	−0.02
	(1.02)	(1.21)
Log household size	0.69	1.48
	(1.56)	(1.41)
Some college	−1.04	0.91
	(1.06)	(1.13)
College grad+	−0.93	2.01
	(1.41)	(1.73)
Log reference person’s age	0.59	0.23
	(1.64)	(1.76)
May-October	−0.09	−0.33
	(1.01)	(1.04)
NHANES cycle 2011–12	3.74***
	(0.88)
NHANES cycle 2015–16		2.35**
		(0.91)
Constant	58.57***	53.51***
	(8.54)	(10.71)
Number of Observations	2614	2401
Number of Children	2048	1863

Notes: School food includes all federally subsidized meals and competitive foods acquired from the cafeteria in a K-12 school. “One school meal effect” is defined as the impact of a 33% shift in the share of daily calories from away-from-school food sources to school food. Sampling weights are applied. Robust standard errors are in parentheses.

^***p<0.01

^**p<0.05

^*p<0.10.