Dietary quality and dietary greenhouse gas emissions in the USA: a comparison of the planetary health diet index, healthy eating index-2015, and dietary approaches to stop hypertension

Table 2 Mean diet-related greenhouse gas emissions by sociodemographic characteristic, National Health and Nutrition Examination Survey 2015–2018^*

	Estimated Emissions (kg CO₂-eq person^− 1 day^− 1) (95% CI)	p^†
Age
20–29	4.3 (4.1, 4.5)	--
30–39	4.4 (4.2, 4.6)	0.49
40–49	4.5 (4.3, 4.6)	0.15
50–59	4.5 (4.3, 4.7)	0.07
60–69	4.5 (4.2, 4.8)	0.11
70–79	4.3 (4.1, 4.5)	0.98
80 or older	4.1 (3.9, 4.2)	0.10
Sex
Male	4.7 (4.5, 4.9)	--
Female	4.1 (4.1, 4.2)	< 0.001
Income
PIR≤1.30	4.3 (4.1, 4.4)	--
PIR > 1.30–3.50	4.4 (4.2, 4.6)	0.04
PIR > 3.50	4.5 (4.3, 4.6)	0.002
Missing	4.5 (4.3, 4.7)	0.04
Education
High school equivalent or lower	4.6 (4.5, 4.8)	--
Some college	4.6 (4.4, 4.7)	0.60
College graduate or above	4.4 (4.3, 4.6)	0.06
Race/Ethnicity
Non-Hispanic White	4.4 (4.3, 4.6)	--
Non-Hispanic Black	4.1 (4.0, 4.3)	< 0.001
Hispanic	4.5 (4.4, 4.6)	0.39
Other race/ethnicity (including Multiracial)	4.3 (4.1, 4.5)	0.15

ISSN: 1479-5868