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. 2021 Mar 30;2(1):e25610. doi: 10.2196/25610

Table 1.

Baseline descriptive statistics and unadjusted outcomes for hypertension cases versus matched healthy controls.

Variable Groupa

Hypertension (n=466) Control (n=466)
Sample description

Age (years), mean (SD) 53.5 (15.5) 52.5 (15.3)

Age group, n (%)



18-25 years 26 (6) 34 (7)


26-40 years 83 (18) 78 (17)


41-55 years 105 (23) 117 (25)


56-90 years 252 (54) 237 (51)

Gender, n (%)



Male 220 (47) 220 (47)


Female 243 (52) 243 (52)


Not specified/other 3 (1) 3 (1)

Education, n (%)



High school or less 115 (25) 112 (24)


Certificate I-IV 69 (15) 69 (15)


University 282 (61) 285 (61)

Adequate health literacyb, n (%) 427 (92) 431 (92)

Takes any prescription medicine, n (%) 359 (77) 195 (42)

Consumer Health Activation Index (score 0-100 where 100 is more active), mean (SD) 75.83 (14.19) 77.17 (12.77)
Risk perception

Seriousness of threat (0=low, 10=high), mean (SD) 7.72 (2.25) 7.66 (2.18)

What percentage of people who get COVID-19 will die as a result? (open), mean (SD) 6.50 (13.49) 5.72 (12.45)

What percentage of people who get COVID-19 will experience only mild symptoms? (open), mean (SD) 62.88 (26.36) 62.37 (27.12)
Anxiety

State-Trait Anxiety Inventory (score range 20-80; normal 34-36), mean (SD) 40.62 (14.95) 38.98 (14.38)

Never (in the past week) felt nervous or stressed because of COVID-19 (categorical), n (%) 113 (24) 115 (25)
Prevention behaviors

Perceived importance of social distancing (average of 4 items from 1-7, where 7 is most important), mean (SD) 6.48 (0.74) 6.42 (0.82)

How often are you leaving home? n (%)


Less than once per week 45 (10) 42 (9)


Once per week 53 (11) 53 (11)


A few times per week 176 (38) 150 (32)


Once per day 154 (33) 176 (38)


Multiple times per day 38 (8) 45 (10)

I have or I will get the flu vaccine this year, n (%)


Strongly disagree/disagree 50 (11) 72 (15)


Neither agree nor disagree 30 (6) 39 (8)


Strongly agree/agree 386 (83) 355 (76)

If a COVID-19 vaccine becomes available, I will get it, n (%)


Strongly disagree/disagree 17 (4) 29 (6)


Neither agree nor disagree 45 (10) 42 (9)


Strongly agree/agree 404 (87) 395 (85)

aPeople reporting high blood pressure and no other conditions were matched to healthy controls with no reported cardiovascular or respiratory conditions.

bBased on the single-item health literacy screener.