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. Author manuscript; available in PMC: 2018 Jul 26.
Published in final edited form as: Med Care. 2016 Jun;54(6):570–577. doi: 10.1097/MLR.0000000000000544

Table 1.

Sample Summary Statistics by Influenza Vaccination Status, Race/Ethnicity, and Experiences of Perceived Discrimination in Healthcare: AF4Q Consumer Survey, Chronically-ill U.S. Adults (2011–2012)

Total Outcome Independent Variable of Interest Moderator

Characteristic Complete
case sample
N = 8,127
Vaccinated,
prev. 12 months
N = 5,197
Non-Hispanic
White race
N = 5,505
Non-Hispanic
Black race
N = 2,112
Hispanic
ethnicity
N = 510
Discrimination,
prev. 12 months
N = 597
Influenza vaccination (prev. 12 months) 58.2% -- 60.3% 43.0% 62.1% 32.4%
Race/ethnicity
    Non-Hispanic White 74.8% 77.5% -- -- -- 36.5%
    Non-Hispanic Black 13.5% 9.9% -- -- -- 28.2%
    Hispanic 11.8% 12.6% -- -- -- 35.4%
Perceived racial/ethnic discrimination in healthcare 7.3% ** 4.1% 3.6% 15.3% 21.9% --
Female sex 56.6% 54.7% 53.3% 66.5% 65.7% 62.2%
Education: obtained 4-year college degree 24.7% * 29.8% 29.7% 6.3% 14.0% 7.1%
Age (years)
    18-64 74.5% *** 68.0% 71.0% 86.8% 83.2% 93.4%
    65 and older 25.5% *** 32.0% 29.0% 13.2% 16.8% 6.4%
Employment status
    Full-time (30+ hours/week) 39.9% * 38.0% 41.5% 30.1% 40.8% 20.5%
    Part-time (<30 hours/week) 11.4% * 11.3% 13.2% 8.2% 4.2% 11.4%
    Retired 21.2% * 27.1% 23.4% 17.1% 12.0% 12.7%
    Other 27.4% * 23.6% 21.9% 44.5% 43.0% 55.4%
Patient Activation Measure stage, mean (SD) 3.2 (0.8) 3.2 (0.8) 3.2 (0.8) 3.1 (0.8) 3.1 (0.9) 2.8 (1.1)
Household income above federal poverty line 67.6% * 73.2% 77.9% 30.2% 45.2% 28.4%
Currently insured 85.4% * 90.3% 90.9% 69.3% 68.5% 57.6%
Self-rated health, mean (SD) 3.0 (1.0) 3.0 (1.0) 3.1 (1.0) 2.6 (0.8) 2.4 (0.9) 2.0 (1.2)
Number of chronic illnesses, mean (SD) 1.4 (0.9) 1.5 (0.9) 1.4 (0.9) 1.3 (0.8) 1.6 (0.8) 1.6 (0.8)
Current tobacco smoker 18.4% *** 11.6% 15.7% 38.3% 12.5% 34.9%
Diet and exercise score, mean (SD) 1.3 (0.7) 1.3 (0.7) 1.2 (0.7) 1.3 (0.7) 1.5 (0.7) 1.1 (0.8)
Trust in physician score, mean (SD 1.3 (0.5) * 1.3 (0.5) 1.3 (0.5) 1.3 (0.5) 1.4 (0.5) 1.4 (0.5)
Visits to providers, prev. 3 months, mean (SD) 1.1 (1.2) 1.1 (1.2) 1.0 (1.2) 1.4 (1.4) 1.4 (1.2) 2.1 (1.3)
Rating of all care, prev. 12 months, mean (SD) 8.1 (2.1) 8.3 (1.8) 8.0 (2.0) 8.7 (1.6) 7.6 (3.0) 5.5 (3.2)

Column percentages and means are weighted to be nationally-representative of chronically-ill U.S. adults. Due to missing values and rounding, numbers in the column percentages in this table may not add up to the total sample size. Sample size values (N) are unweighted to show actual number of respondents in cells. For the outcome column, bivariate statistical tests were conducted to detect, by influenza vaccination uptake, significant differences among group percentages (design-based F tests) and among means (adjusted Wald tests). In this column, *0.05>p≥0.01; **0.01>p≥0.001; ***p<0.001

Patient Activation Measure stage ranges from 1–4 where 4 indicates higher patient activation.

Self-rated health ranges from 1–5 where 5 indicates excellent health.

Number of chronic illnesses rages from 1–5 (asthma, depression, diabetes, heart disease, and/or hypertension).

Diet and exercise index ranges from 0–2 where higher scores indicate better exercise and diet practices.

Trust in physician score ranges from 1–3, where 1 is “a lot” and 3 is “not at all.”

Number of visits to healthcare providers in the previous 3 months to treat conditions is categorized as 0, 1, 2, 3, or 4+ times.

Rating of all care received from all healthcare professionals in the previous 12 months ranges from 0–10 where 10 is the best possible score.