Table 2.

Logistic regression predicting obesity from soda consumption and ethnicity among non-institutionalized adults aged 18 years or over, California Health Interview Survey 2009 (n 36 271)

Variable	AOR*	95 % CI
Number of times drink soda per week†	1·00	0·99, 1·02
Ethnicity‡
White	Ref.
Chinese American	0·11	0·07, 0·17
Japanese American	0·58	0·35, 0·94
Korean American	0·11	0·06, 0·22
Filipino American	0·62	0·38, 1·02
South Asian American	0·22	0·14, 0·33
Vietnamese American	0·21	0·13, 0·35
Other Asian American	0·27	0·12, 0·61
Asian heritage group by soda interaction§
Chinese American × soda	1·22	1·09, 1·37
Japanese American × soda	1·04	0·95, 1·14
Korean American × soda	1·22	1·01, 1·46
Filipino American × soda	0·97	0·86, 1·09
South Asian American × soda	1·00	0·88, 1·14
Vietnamese American × soda	0·99	0·88, 1·13
Other Asian American × soda	1·19	1·03, 1·38
Sociodemographic characteristics
Gender
Male	Ref.
Female	0·73	0·66, 0·80
Age (years)	1·01	1·00, 1·01
Years of education	0·94	0·92, 0·97
Annual household income ($US, thousands)	1·00	1·00, 1·00
	F	P value
Test for interaction	2·82	0·0118
Hosmer–Lemeshow Goodness of Fit statistic	0·47	0·8868

AOR, adjusted OR; ref., reference category.

Significant AOR and 95 % CI denoted in bold.

^*Adjusted for gender, age, years of education and income.

^†Represents the effect of each additional soda consumed for Whites.

^‡Represents the odds of being obese for each ethnic-origin group, relative to Whites and soda consumption of zero times per week.

^§Represents the difference in the effect of each additional soda consumed for Asian-American subgroup, relative to Whites.