Table 1.
Characteristics of CKD and non-CKD participants in NHANES 1999-2004
| Variable |
CKD |
Non-CKD |
P-value** |
|---|---|---|---|
| (N = 2153) | (N = 9433) | ||
| Age, years (mean ± SE) |
60.7 (0.7) |
43.9 (0.3) |
<0.001 |
| Male gender, % (SE) |
43.1 (1.0) |
50.6 (0.4) |
<0.001 |
| Race, % (SE) |
|
|
0.004 |
| Non-Hispanic White |
71.9 (2.1) |
72.4 (1.6) |
|
| Non-Hispanic Black |
10.8 (1.2) |
9.9 (0.9) |
|
| Mexican American |
5.6 (1.0) |
7.6 (0.9) |
|
| Other Hispanic |
5.8 (1.4) |
5.8 (1.1) |
|
| Other |
5.8 (1.0) |
4.2 (0.4) |
|
| Smoking, % (SE) |
18.7 (1.1) |
25.6 (0.8) |
<0.001 |
| Income, % (SE) |
|
|
<0.001 |
| Missing |
11.0 (1.0) |
9.0 (0.6) |
|
| <20,000 |
26.3 (1.8) |
15.0 (0.8) |
|
| 20,000-45,000 |
30.1 (1.4) |
26.5 (1.0) |
|
| 45,000-75,000 |
18.4 (1.6) |
23.4 (0.8) |
|
| > = 75,000 |
14.2 (1.5) |
26.1 (1.4) |
|
| BMI (mean ± SE) |
29.2 (0.3) |
28.1 (0.1) |
<0.001 |
| Waist circumference (cm) (mean ± SE) |
101.1 (0.6) |
96.1 (0.3) |
<0.001 |
| Total fat kg (mean ± SE)* |
30.3 (0.4) |
28.1 (0.2) |
<0.001 |
| Total lean mass excluding BMC kg (mean ± SE)* |
49.1 (0.4) |
51.2 (0.2) |
<0.001 |
| Percent body fat (mean ± SE)* |
36.7 (0.2) |
33.8 (0.1) |
<0.001 |
| eGFR, ml/min/1.73 m2 (mean ± SE) |
72.9 (0.9) |
96.8 (0.4) |
<0.001 |
| UACR (mg/g) (mean ± SE) |
154.4 (15.4) |
7.1 (0.08) |
<0.001 |
| C-reactive protein (mg/dL) |
0.59 (0.03) |
0.39 (0.009) |
<0.001 |
| Hypertension (SBP >140 or DBP >90 mm Hg) or use of antihypertensives |
62.4 (1.6) |
25.2 (0.8) |
<0.001 |
| Diabetes |
20.4 (1.4) |
4.6 (0.2) |
<0.001 |
| Hyperlipidemia |
67.9 (1.5) |
52.8 (0.8) |
<0.001 |
| Liver condition |
3.7 (0.5) |
3.1 (0.2) |
0.07 |
| Cancer,% (SE) |
16.1 (1.1) |
6.6 (0.3) |
<0.001 |
| Physical activity,% (SE) |
|
|
<0.001 |
| LTPA <450 METS/week |
67.0 (1.7) |
53.7 (1.1) |
|
| LTPA 450–749.9 METS/week |
8.7 (0.8) |
9.1 (0.4) |
|
| LTPA ≥750 METS/week |
24.3 (1.5) |
37.2 (1.0) |
|
| Sodium intake mg (mean ± SE)*** | 3011 (45) | 3549 (30) | <0.001 |
*Means and standard errors from survey means on each of the 5 imputations analyzed using procmianalyze.
**Rao-Scott Chi-square test for categorical variables and t-test for continuous variables.
***Sodium available for 2035 and 8095 CKD and non CKD participants respectively.