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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Patient Educ Couns. 2012 Mar 27;88(2):184–188. doi: 10.1016/j.pec.2012.02.015

Table 2.

Univariate Associations between Patient Characteristics and Systolic Blood Pressure

Characteristics, N=338 Median [IQR] SBP, mmHg p
Age, years 0.07*
 < 59 133 [119,147]
 ≥ 59 136 [119,153]
Sex 0.04*
 Female 132 [117,149]
 Male 137 [124,152]
Race 0.07*
 Non-white 141 [127,152]
 White 134 [119,150]
CKD Stage, (1–2, 3, and 4–5) 0.01+
 1–2 134 [122,147]
 3 132 [118,148]
 4–5 140 [125,156]
Self-reported Diabetes Mellitus, n=324 0.60*
 No 134 [121,148]
 Yes 134 [118,143]
Response “Do you have Chronic Kidney Disease?” 0.06
 Yes 133 [119,149]
 No 140 [124,152]
Education Attainment 0.80*
 < High School 135 [115,150]
 ≥ High School 134 [120,150]
Health Literacy Assessment 0.20*
 < 9th Grade Level 138 [122,158]
 ≥ 9th Grade Level 134 [119,149]
Nephrology Appointments with past one year 0.70*
 ≤ 2 visits 134 [120,150]
 ≥ 3 visits 136 [119,150]
Annual Household Income, Dollars, n=318 0.30+
 ≤ 25,000 137 [123,150]
 25,000 – 55,000 134 [123,151]
 > 55,000 134 [117,148]

Hypertension Knowledge Questions

Response “Can high blood pressure hurt the kidney?” 0.10*
 Correct 134 [119,150]
 Incorrect 140 [124,184]
Response “On average, your blood pressure should be?” 0.05*
 Correct 134 [119,150]
 Incorrect 141 [125,154]
Self-rating of patient knowledge about goal blood pressure, n=333 0.20+
 1 = “I don’t know anything” 133 [125,144]
 2 = “I know a little amount” 143 [119,154]
 3= “I know a good amount” 135 [122,149]
 4= “I know a lot” 132 [118,148]
*

Rank sum used for categorical variables with two categories

+

K Wallis used for categorical variables with three or more categories