Table 2.

Coverage and mean values of the food systems–related greenhouse gas emission factor (GHGEF) (${\text{kgCO}}_2\text{eq}/\mathrm{kg}$) database (FS-GHGEF-D) by food groups after excluding food items with high uncertainty in the seventh Korea National Health and Nutrition Examination Survey (2016–2018).

Food groups (20 groups)	Number of food items with high uncertainty by the MCMCa,b	After excluding food items with high uncertainty			Difference from before the exclusion
		Number of food items	Coverage (%)	Mean value of the GHGEF	Number of food items	Coverage (%)	GHGEF
Total food items	265 (131)	3,629	93.2	—	$-134$	$-3.4$	—
Plant foods (11 groups)
Cereals	15 (3)	666	97.8	2.43	$-12$	$-1.8$	$-0.16$
Potatoes and starches	2 (1)	66	97.1	1.45	$-1$	$-1.4$	0
Sugars and sweeteners	0	263	100	2.53	0	0	0
Pulses	0	137	100	2.06	0	0	0
Nuts and seeds	0	61	100	1.46	0	0	0
Vegetables	5 (5)	306	98.4	2.15	0	0	0
Mushrooms	1 (1)	32	97.0	2.81	0	0	0
Fruits	0	100	100	2.11	0	0	0
Seaweeds	108 (108)	20	15.6	0.59	—	0	0
Oil and fats (plants)	0	64	100	3.73	0	0	0
Others (plants)	4 (0)	8	66.7	2.21	$-4$	$-33.3$	$-0.34$
Animal foods (6 groups)
Meats	1 (0)	233	99.6	16.21	0	$-0.4$	$-0.13$
Eggs	0	13	100	4.08	$-1$	0	0
Fishes	0	349	100	7.76	0	0	$-0.16$
Milk and milk products	1 (1)	459	99.8	3.56	0	0	0
Oil and fats (animal)	0	13	100	11.10	0	0	0
Others (animal)	5 (5)	10	66.7	4.23	0	0	0
Seasoning	17 (7)	435	96.2	1.85	$-10$	$-2.3$	$-0.02$
Beverages	70 (0)	328	82.4	5.20	$-70$	$-17.6$	$-0.51$
Alcoholic beverages	36 (0)	66	64.7	1.87	$-36$	$-35.3$	$-0.19$

Note: —, no data; MCMC, Monte Carlo Markov chain.

^a Total food items with high uncertainty determined by the MCMC are shown, with the number of food items not assigned the GHGEF indicated in parentheses.

^b The value in the parenthesis is the number of food items which did not have GHGEF.