TABLE 3.

Logistic regression model of factors associated with purchase of ≥1 fruit or vegetable within the last week¹

Characteristic	Unadjusted OR (95% CI)	χ2P value	Adjusted OR (95% CI)	χ2P value
Age, y (ref: 18–29)
30–44	1.1 (0.6, 2.0)	0.709	1.6 (0.8, 3.1)	0.20
45–59	0.7 (0.4, 1.3)	0.255	1.1 (0.6, 2.1)	0.81
≥60	0.4 (0.2, 0.7)	0.001	0.5 (0.2, 0.9)	0.034
Sex (ref: male)
Female	1.5 (1.0, 2.1)	0.043	1.7 (1.1, 2.6)	0.026
Education (ref: <high school)
High school	0.7 (0.5, 1.0)	0.079	0.6 (0.4, 0.9)	0.019
≥College degree	0.5 (0.3, 0.8)	0.007	0.4 (0.2, 0.8)	0.006
Shopping frequency at store (ref: weekly or more)
Biweekly to monthly	0.4 (0.3, 0.6)	<0.001	0.3 (0.2, 0.6)	<0.001
Few times per year	0.1 (0.1, 0.3)	<0.001	0.1 (0.1, 0.4)	<0.001
Travel time to store, min (ref: ≤5)
6–30	1.3 (0.9, 2.0)	0.117	1.4 (0.9, 2.1)	0.18
31–60	0.6 (0.3, 0.9)	0.027	0.6 (0.3, 1.1)	0.12
>60	0.3 (0.1, 0.6)	0.002	0.5 (0.2, 1.3)	0.16
Store type (ref: convenience store)
Trading post	1.3 (0.9, 1.9)	0.122	2.2 (1.4, 3.4)	0.001
Grocery store	5.2 (3.4, 8.1)	<0.001	6.2 (3.4, 11.1)	<0.001
Fruit and Vegetable Index (ref: <good/excellent)
Good/excellent	1.8 (1.3, 2.4)	<0.001	1.5 (1.0, 2.3)	0.07
HNSI store (ref: non-HNSI store)	2.4 (1.8, 3.3)	<0.001	2.5 (1.6, 3.7)	<0.001
Household size, persons (ref: 1–2)
3–5	1.9 (1.4, 2.7)	<0.001	1.6 (1.0, 2.5)	0.041
≥6	2.2 (1.4, 3.4)	<0.001	1.4 (0.8, 2.4)	0.23
Receiving food assistance2 (ref: not receiving assistance)	1.9 (1.4, 2.6)	<0.001	1.2 (0.8, 1.9)	0.28
Household refrigeration (ref: no refrigeration)	0.6 (0.4, 1.0)	0.071	1.0 (0.5, 2.1)	0.98
Household running water (ref: no running water)	0.7 (0.5, 1.1)	0.139	1.2 (0.6, 2.3)	0.57

¹ n = 692. n may not sum to 692 owing to missing data and percentages may not sum to 100% because of rounding. HNSI, Healthy Navajo Stores Initiative.

²Receiving food assistance defined for this study as participation in the Supplemental Nutrition Assistance Program or the Food Distribution Program on Indian Reservations.