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