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Table 2 Comparison between NHANES participants with and without albuminuria

From: Association of serum klotho level with albuminuria in middle‑aged and elderly participants without diabetes mellitus: a cross‑sectional study

Variable

Total

(N = 9217)

Non-Albuminuria

(N = 8394)

Albuminuria

(N = 823)

P Value

Age (year)

56.3 ± 10.8

56.0 ± 10.7

59.6 ± 11.2

< 0.001

Gender (n,%)

   

0.973

 Male

4385 (47.6)

3993 (47.6)

392 (47.6)

 

 Female

4832 (52.4)

4401 (52.4)

431 (52.4)

 

BMI (kg/m2)

28.8 ± 6.3

28.7 ± 6.2

29.6 ± 7.1

< 0.001

Ethnicity (n,%)

   

< 0.001

 Mexican American

1266 (13.7)

1155 (13.8)

111 (13.5)

 

 Non-Hispanic White

4374 (47.5)

4037 (48.1)

337 (40.9)

 

 Non-Hispanic Black

1712 (18.6)

1493 (17.8)

219 (26.6)

 

 Other Race

1865 (20.2)

1709 (20.3)

156 (19.0)

 

Marital status (n,%)

   

< 0.001

 Never married

761 (8.2)

686 (8.2)

75 (9.1)

 

 Widowed, Divorced, Separated

2422 (26.3)

2151 (25.6)

271 (32.9)

 

 Living with partner, Married

6034 (65.5)

5557 (66.2)

477 (58.0)

 

Education (n,%)

   

< 0.001

 Less than 9th grade

983 (10.7)

868 (10.3)

115 (14.0)

 

 9-11th grade or High school

3267 (35.4)

2937 (35.0)

330 (40.1)

 

 Some college or College or above

4967 (53.9)

4589 (54.7)

378 (45.9)

 

Family income to poverty ratio (n,%)

   

< 0.001

 ≤ 130%

2620 (28.4)

2326 (27.7)

294 (35.7)

 

 130–350%

3205 (34.8)

2885 (34.4)

320 (38.9)

 

 > 350%

3392 (36.8)

3183 (37.9)

209 (25.4)

 

Smoking (n,%)

   

0.002

 Never

4799 (52.1)

4414 (52.6)

385 (46.8)

 

 Former

2534 (27.5)

2298 (27.4)

236 (28.7)

 

 Now

1884 (20.4)

1682 (20.0)

202 (24.5)

 

Charlson comorbidity index (n,%)

   

< 0.001

 0

4825 (52.4)

4489 (53.5)

336 (40.8)

 

 1

2029 (22.0)

1836 (21.9)

193 (23.5)

 

 2

1135 (12.3)

1016 (12.1)

119 (14.5)

 

 ≥ 3

1228 (13.3)

1053 (12.5)

175 (21.2)

 

Hypertension (n,%)

   

< 0.001

 No

4920 (53.4)

4662 (55.5)

258 (31.3)

 

 Yes

4297 (46.6)

3732 (44.5)

565 (68.7)

 

Hyperlipidemia (n,%)

   

0.059

 No

7103 (77.1)

6447 (76.8)

656 (79.7)

 

 Yes

2114 (22.9)

1947 (23.2)

167 (20.3)

 

ACEI/ARB (n,%)

   

0.014

 No

8148 (88.4)

7442 (88.7)

706 (85.8)

 

 Yes

1069 (11.6)

952 (11.3)

117 (14.2)

 

Klotho (pg/ml)

803.1 (658.4-987.8)

806.9 (661.3-991.4)

758.8 (620.1-958.2)

0.001

eGFR (ml/min per1.73 m2)

88.3 ± 18.5

88.9 ± 17.6

82.7 ± 24.7

< 0.001

  1. Abbreviation: BMI = body mass index, eGFR = estimated glomerular filtration rate, ACEI = angiotensin converting enzyme inhibitor, ARB = angiotonin receptor blocker