Table 1 Characteristics of the study population
From: Serum sodium in relation to various domains of cognitive function in the elderly US population
Characteristics | Mean ± SD or N(%) |
|---|---|
No of participants | 2541 |
Sex | |
Male | 1236 (48.6 %) |
Female | 1305 (51.4 %) |
Age at interview (year) | 69.6 ± 6.8 |
Ethnicity | |
Non-Hispanic white | 1252 (49.3 %) |
Non-Hispanic black | 573 (22.6 %) |
Hispanic | 477 (18.8 %) |
Others | 239 (9.4 %) |
Annual Family Income | |
Less than $20,000 | 640 (25.2 %) |
$20,000 and over | 1901 (74.8 %) |
Education | |
Less than high school | 645 (25.4 %) |
High school graduate | 600 (23.6 %) |
More than high school | 1296 (51.0 %) |
Marital status | |
Married | 1395 (54.9 %) |
Never married | 146 (5.8 %) |
Widowed/divorced/separated | 1000 (39.4 %) |
Smoking history | |
Never smoked | 329 (13.0 %) |
Ex-Smoker | 954 (37.5 %) |
Current Smoker | 1258 (49.5 %) |
Alcohol consumptiona | |
Yes | 1729 (68.0 %) |
No | 812 (32.0 %) |
Physical Activityb | |
Yes | 985 (38.8 %) |
No | 1556 (61.2 %) |
BMI (kg/m2) | |
Underweight (< 18.5) | 35 (1.4 %) |
Normal weight (18.5–24.9) | 653 (25.7 %) |
Overweight (25.0-29.9) | 899 (35.4 %) |
Obesity (> 30) | 954 (37.5 %) |
CKD-EPI eGFR, ml/min per 1.73 m2 | 73.4 ± 19.8 |
Serum glucose, mg/dL | 112.4 ± 43.0 |
Diuretic use | 478 (18.8 %) |
Diabetes | 617 (24.3 %) |
Cardiovascular diseasec | 383 (15.1 %) |
Stroke | 173 (6.8 %) |
Chronic obstructive pulmonary disease | 242 (9.5 %) |
Thyroid disease | 434 (17.1 %) |
Liver disease | 143 (5.6 %) |