Table 4 Non-parametric RD estimates of the effects of hypertension diagnoses on diet structure (individuals ≥ 18 years old).

	(1)	(2)	(3)	(4)	(5)	(6)
Estimator	Mean [SD]	RD estimates based on SBP readings (cutoff: SBP = 140)		RD estimates based on DBP readings (cutoff: DBP = 90)		RD estimates based on the distance to the cutoff boundary (SBP = 140, DBP = 90)
Sample	Non-hypertensive (SBP < 140, DBP < 90)	Diastolic normal (DBP < 90)	Full	Systolic normal (SBP < 140)	Full	Full
A. Dietary Diversity Score (DDS)	5.00	−0.610***	−0.478***	0.159	−0.036	−0.329*
	[1.29]	(0.179)	(0.149)	(0.241)	(0.162)	(0.199)
Optimal bandwidth		11.650	12.455	4.856	10.41	14.466
N	14,873	15,704	17,847	16,081	17,847	17,847
B. Diet Balance Index (DBI)	−17.16	−2.542**	−2.378**	−0.801	−0.196	−1.639
	[8.87]	(1.150)	(0.991)	(1.730)	(0.977)	(1.304)
Optimal bandwidth		12.106	12.212	5.169	11.115	14.907
N	14,277	15,074	17,147	15,444	17,147	17,147
C. DBI-O: over-consumption	14.42	−0.029	−0.328	−1.125	−0.269	−0.404
	[5.08]	(0.543)	(0.501)	(0.918)	(0.504)	(0.666)
Optimal bandwidth		14.468	13.789	5.302	11.152	17.495
N	14,277	15,074	17,147	15,444	17,147	17,147
D. DBI-U: under-consumption	−31.55	−2.278***	−1.870***	0.521	0.039	−0.816
	[5.78]	(0.805)	(0.655)	(1.188)	(0.710)	(0.853)
Optimal bandwidth		12.31	12.786	4.685	10.486	15.447
N	14,616	15,432	17,541	15,804	17,541	17,541

Data were drawn from the China Health and Nutrition Survey (1997, 2000, 2004, 2006, 2009, and 2011). Analytical samples are restricted to observations within ±40 mmHg intervals of the respective cutoffs. The actual sample size used for each estimate is determined by the optimal bandwidth chosen by minimizing the mean squared error to produce a lower bias (Calonico et al., 2014). Non-parametric RD estimates using the triangular kernel and the associated optimal bandwidth are reported. Standard deviations are reported in brackets. Robust standard errors are reported in parentheses, clustered at the community level.
***p < 0.01; **p < 0.05; *p < 0.1.

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