Table 1.
Descriptive characteristics of treatment vs. placebo at baseline
| Placebo (N=64) |
Treatment (N=59) |
P value | |
|---|---|---|---|
| Age, year | 60.1±8.1 | 60.1±7.6 | 0.731 |
| Age >65 year (%) | 25.0 | 27.1 | 0.79 |
| Sex - male (%) | 43.7 | 44.0 | 0.972 |
| Body mass index (BMI), kg/m2 | 30.9±7.0 | 29.9±6.0 | 0.521 |
| Systolic blood pressure (mmHg) | 127.9±15.2 | 127.4±15.5 | 0.92 |
| Diastolic blood pressure(mmHg) | 75.0±8.5 | 75.3±8.8 | 0.77 |
| eGFR, ml/min/1.73m2 | 79.3±14.9 | 82.7±13.5 | 0.151 |
| Smoking status (%) | 0.902 | ||
| Never | 59.4 | 55.2 | |
| Ever | 34.4 | 37.9 | |
| Current | 6.2 | 6.9 | |
| Drinking status (%) | 0.212 | ||
| Never | 39.0 | 35.6 | |
| Ever | 21.9 | 11.9 | |
| Current | 39.1 | 52.5 | |
| Physically active in ≥ 2 days per week (%) | 87.5 | 84.8 | 0.662 |
| Education under college (%) | 10.9 | 10.2 | 0.892 |
| Race (%) | 0.512 | ||
| White | 98.4 | 96.6 | |
| Daily nutrients intake | |||
| Total energy (kcal) | 2082.4± 663.8 | 1974.3±467.5 | 0.331 |
| Total Ca (mg) | 1283.3±359.0 | 1299.4± 330.7 | 0.681 |
| Total Mg (mg) | 336.8± 100.9 | 350.4±81.0 | 0.231 |
| Ca:Mg intake ratio | 4.0±1.8 | 3.8±1.1 | 0.491 |
| Seasons (%) | |||
| Spring | 20.3 | 20.3 | 0.922 |
| Summer | 43.7 | 47.5 | |
| Fall | 14.1 | 15.2 | |
| Winter | 21.9 | 16.9 | |
| MoCA scores | 27.2±2.2 | 27.0±2.7 | 0.921 |
Continuous variables: X±SD; categorical variables: %
Tests used:
1
Wilcoxon test
2
Pearson chi-square test
eGFR: estimated glomerular filtration rate