Table 3.

Differences in socioeconomic characteristics, nutrition knowledge, and perceptions of food access between the identified food acquisition and shopping patterns of 466 participants from disadvantaged communities in a study of food access, food shopping, and food security in South Carolina (2013–2014)

Characteristics	Class 1e n=163	Class 2f n=191	Class 3g n=112	Class 1 vs. Class 2 (ref)	Class 1 vs. Class 3 (ref)	Class 3 vs. Class 2 (ref)
	%/ Mean	%/ Mean	%/ Mean	OR (95%CI)	OR (95%CI)	OR (95%CI)
SNAPa participation, %b	77.1	68.6	41.9	1.2 (0.6–2.3)	2.3 (1.0–5.1)*	0.5 (0.3–1.1)
Marginal food security, %bc	21.6	20.8	17.1	1.2 (0.4–3.4)	5.7 (1.9–17.1)*	0.2 (0.1–0.7)*
Low food security, %bc	34.9	34.4	27.1	1.2 (0.5–3.1)	5.3 (1.8–15.1)*	0.2 (0.1–0.6)*
Very low food insecurity, %bc	35.0	33.0	13.1	1.0 (0.4–2.6)	10.4 (3.6–30.5)*h	0.1 (0.0–0.3)*h
High school education, %	35.8	40.9	37.9	0.9 (0.5–1.9)	2.0 (0.9–4.7)	0.5 (0.2–1.0)
Less than high school education, %bc	39.6	35.7	6.2	1.3 (0.7–2.7)	12.9 (2.5–66.8)*h	0.1 (0.0–0.5)*h
Less than $20,000 household annual income, %bc	91.1	82.4	55.3	1.9 (0.8–4.5)	4.6* (1.6–12.6)	0.4 (0.2–0.9)*
Household size, mean	2.4	2.3	2.3	1.0 (0.8–1.2)	1.0 (0.8–1.3)	1.0 (0.8–1.2)
Nutrition knowledge, fruit and vegetable intake <5 servings per day, %	77.8	78.4	70.1	1.2 (0.6–2.2)	1.3 (0.5–3.2)	0.9 (0.4–2.2)
Perception of access to adequate food shopping in neighborhood is a problem, %cd	75.7	59.0	72.4	2.2 (1.3–3.9)*	0.8 (0.3–2.2)	2.6 (1.1–6.4)*

Model adjusts for age, sex, and race/ethnicity.

^*for P<0.05

^aSNAP: Supplemental Nutrition Assistance Program.

^bsignificant difference in the prediction of class membership between Class 1 and Class 3 using multinomial logistic regression;

^csignificant difference in the prediction of class membership between Class 3 and Class 2 using multinomial logistic regression.

^dsignificant difference in the prediction of class membership between Class 1 and Class 2 using multinomial logistic regression;

^eClass 1: those who use community food resources, are infrequent grocery shoppers, and use someone else’s car or public transportation when shopping;

^fClass 2: those who use community food resources and are more frequent and proximal shoppers;

^gClass 3: those who do not use community food resources and are distal shoppers;

^hThe large point estimates and wide confidence intervals are due to the small cell for very low food insecurity (n=17) and less than high school education (n=12) in class 3.