TABLE 1.

Sample characteristics of participants ≥18 years in the United States, by healthcare personnel status, demographic, and access-to-care variables--National Health Interview Survey (NHIS), 2013–14 influenza season

Characteristic	Healthcare personnel		Non-HCP
	Sample	Weighted %	Sample	Weighted %
Total	2,651	100.0	29,933	100.0
Age (years)
18–49	1,603	62.6	15,152	54.9*
50–64	770	29.4	7,624	25.6
≥65	278	8.0	7,157	19.5
Sex
Male	652	27.5	13,887	49.8*
Female	1,999	72.5	16,046	50.2
Race/ethnicitya
Non-Hispanic White	1,742	70.7	18,248	65.6*
Non-Hispanic Black	408	13.3	4,049	11.3
Hispanic	288	9.1	5,139	15.7
Asian	157	5.6	1,698	5.4
Other	56	1.4	799	2.1
Marital status
Married	1,221	56.1	12,931	52.7*
Widowed/divorced/separated	606	14.2	8,017	17.7
Never married	816	29.6	8,919	29.6
Education
High school or less	547	18.5	12,789	41.4*
Some college or college graduate	1,655	63.5	14,084	48.7
Above college graduate	446	18.0	2,921	9.9
Poverty level
At or above poverty	2,284	92.7	22,780	85.6*
Below poverty	241	7.3	5,235	14.4
Region
Northeast	526	19.7	4,700	17.0*
Midwest	613	28.2	6,159	22.7
South	847	33.0	10,804	37.3
West	665	19.0	8,270	23.0
US born status
U.S. born	2,258	85.3	24,306	81.8*
Born outside U.S. -- In U.S. < 10 yrs	71	2.0	1,135	3.7
Born outside U.S. -- In U.S. ≥ 10 yrs	316	12.7	4,421	14.5
High-risk statusb
High risk	544	20.3	8,271	25.2*
Not high risk	2,104	79.7	21,604	74.8
Physician contacts within past year
None	338	12.0	5,655	19.5*
1	489	17.9	5,341	18.8
2–3	805	30.6	7,646	25.7
4–9	688	27.4	7,118	23.3
≥10	328	12.1	4,067	12.7
Hospitalization within past year
Yes	195	6.9	2,886	8.7*
No	2,454	93.1	27,030	91.3
Usual place for health care
Yes	2,382	90.5	25,449	85.1*
No	269	9.5	4,477	14.9
Health insurance
With health insurance	2,337	90.4	25,095	84.1*
Without health insurance	309	9.6	4,739	15.9
Direct patient care
Yes	1,627	60.4	NA	NA
No	1,024	39.6	NA	NA

Note: Boldface indicates significance.

Abbreviation: NA=Not applicable.

^aRace/ethnicity was defined based on individuals self-identifying as non-Hispanic white, non-Hispanic black, Hispanic, non-Hispanic Asian, and non-Hispanic other race (including American Indian/Alaska Native, and multiple races).

^bIndividuals who self-reported one or more of the following: ever being told by a physician they had diabetes, emphysema, COPD, coronary heart disease, angina, heart attack or other heart condition; being diagnosed with cancer in the past 12 months (excluding non-melanoma skin cancer) or ever being told by a physician they have lymphoma, leukemia or blood cancer; during the past 12 months, being told by a physician they have chronic bronchitis or weak or failing kidneys; or reporting an asthma episode or attack in the past 12 months.

^*p<0.05, by chi-square test for comparisons between healthcare personnel and non-healthcare personnel of the distribution of each covariate category.