Table 2.

The interaction effect between obesity and current smoking on the incidence of hypertension

The interaction terms	Crude		Adjusteda
	β	P	β	P
Total population
obesity ×current smoking	− 0.172	0.001	−0.113	0.034
Males
obesity ×current smoking	− 0.219	0.007	− 0.089	0.273
Females
obesity ×current smoking	−0.406	0.002	−0.280	0.030
Aged 18–29 years
obesity ×current smoking	−0.084	0.551	−0.095	0.499
Aged 30–49 years
obesity ×current smoking	−0.110	0.180	−0.111	0.180
Aged 50–59 years
obesity ×current smoking	−0.216	0.034	−0.202	0.049
Aged 60~93 years
obesity ×current smoking	0.115	0.418	0.120	0.398

^aIn adjusted model, age, gender, current drinking, ethnicity, physical activity, and death were adjusted