Table 2.

Linear regression results regarding the association between dinner companion and BMI among Korean adults, aged 20 years or over, from the Korean Health and Nutrition Examination Survey VI (2013–2015)^*

	BMI (kg/m2)
Variable	β	se	P value
Dinner companion
With family	−0·39	0·11	<0·01
With others	−0·06	0·14	0·67
Alone	Ref.	–	–
Age (years)
20–29	−0·07	0·24	0·76
30–39	0·79	0·17	<0·01
40–49	1·00	0·16	<0·01
50–59	0·93	0·14	<0·01
60–69	0·82	0·13	<0·01
70+	Ref.	–	–
Gender
Male	1·31	0·11	<0·01
Female	Ref.	–	–
Household income
Q1 (low)	0·30	0·14	0·04
Q2	0·11	0·11	0·29
Q3	0·17	0·10	0·09
Q4 (high)	Ref.	–	–
Marital status
Married	0·33	0·18	0·07
Widowed	0·76	0·22	<0·01
Divorced	−0·22	0·24	0·37
Unmarried	Ref.	–	–
Living alone
Yes	−0·05	0·16	0·76
No	Ref.	–	–
Educational level
Middle school or less	0·86	0·12	<0·01
High school	0·29	0·10	<0·01
College or over	Ref.	–	–
Occupation
White collar	−0·09	0·10	0·38
Pink collar	0·14	0·12	0·27
Blue collar	0·01	0·11	0·89
Unemployed	Ref.	–	–
Average sleep hours per day
<6	0·53	0·11	<0·01
6–7	0·33	0·10	<0·01
7–8	0·03	0·09	0·75
>8	Ref.	–	–
Average sedentary hours per day
<5	−0·28	0·10	<0·01
5–9	−0·20	0·09	0·02
>9	Ref.	–	–
Smoker
Current	−0·09	0·12	0·44
Past	−0·14	0·11	0·21
Never	Ref.	–	–
Alcohol consumption frequency
Never	0·04	0·11	0·69
Once/month or less	−0·10	0·10	0·36
2–4 times/month	−0·06	0·11	0·57
Twice/week or more	Ref.	–	–
Total energy intake
<7513 kJ (<1800 kcal)	−0·03	0·10	0·76
7535–10 456 kJ (1801–2499 kcal)	−0·19	0·10	0·05
≥10 460 kJ (≥2500 kcal)	Ref.	–	–
Year
2013	−0·13	0·10	0·19
2014	−0·17	0·10	0·08
2015	Ref.	–	–

Ref., reference category.

^*Complex study design, including survey weights, was considered.