Table 1.
Sodium intake, potassium intake, and sodium-to-potassium ratio (Na/K) in 755 older Portuguese women, ≥65 years old, participating in a crosssectional observational study
| Sodium intake, mg/day (n = 755) | Potassium intake, mg/day (n = 755) | Na/K (n = 755) | ||||
|---|---|---|---|---|---|---|
| Age, yearsa | Median (IQR) | Inadequate (≥2,000) n (%) | Median (IQR) | Inadequate (<3,500) n (%) | Median (IQR) | >1n (%) |
| 65–79 | 3,008 (1,532) | 459 (82.0) | 2,106 (897) | 532 (95.0) | 2.38 (1.10) | 550 (98.2) |
| ≥80 | 2,552 (1,168) | 145 (74.4) | 1,755 (780) | 194 (99.5) | 2.31 (1.02) | 193 (99.0) |
| p | n.s. | <0.05 | <0.05 | <0.05 | n.s. | n.s. |
| Education, years | ||||||
| 0 | 2,572 (1,860) | 91 (72.8) | 1,755 (1092) | 121 (96.5) | 2.50 (1.12) | 122 (97.6) |
| 1–3 | 3,064 (1,780) | 132 (78.1) | 1,950 (819) | 161 (95.3) | 2.43 (1.23) | 166 (98.2) |
| 4 | 2,856 (1,464) | 290 (82.4) | 2,106 (780) | 339 (96.3) | 2.33 (1.03) | 346 (98.3) |
| 5–11 | 2,692 (1,168) | 66 (83.5) | 1,989 (780) | 76 (96.2) | 2.28 (0.91) | 79 (100) |
| ≥12 | 2,760 (924) | 25 (83.3) | 1,989 (721.5) | 29 (96.7) | 2.10 (1.30) | 79 (100) |
| p | n.s. | n.s. | <0.05 | n.s. | n.s. | n.s. |
| Marital status | ||||||
| Single/divorced/widowed | 2,712 (1,428) | 359 (76.4) | 1,930.5 (897) | 454 (96.6) | 2.35 (1.11) | 461 (98.1) |
| Married/common-law marriage | 3,088 (1,452) | 245 (86.0) | 2,145 (780) | 272 (95.4) | 2.44 (1.00) | 282 (98.9) |
| p | <0.05 | <0.05 | <0.05 | n.s. | n.s. | n.s. |
| Residence | ||||||
| Home | 2,856 (1,520) | 582 (80.9) | 2,028 (897) | 690 (96.0) | 2.40 (1.07) | 707 (98.3) |
| Care home | 2,200 (1,328) | 22 (61.1) | 1,794 (828.8) | 36 (100) | 1.99 (0.96) | 36 (100) |
| p | <0.05 | <0.05 | n.s. | n.s. | <0.05 | n.s. |
| Income, € | ||||||
| ≤499 | 2,876 (1580) | 130 (78.8) | 1,950 (1014) | 163 (98.8) | 2.40 (1.24) | 161 (97.6) |
| 500–999 | 2,936 (1388) | 147 (86.5) | 2,184 (711.8) | 163 (95.9) | 2.37 (1.10) | 169 (99.4) |
| >1,000 | 3,040 (1,660) | 65 (87.8) | 2,086.5 (858) | 69 (93.2) | 2.38 (1.15) | 72 (97.3) |
| Unknown/no response | 2,656 (1,520) | 262 (75.7) | 1,950 (867.8) | 331 (95.7) | 2.34 (0.98) | 341 (98.6) |
| p | <0.05 | <0.05 | <0.05 | n.s. | n.s. | n.s. |
| BMI, kg/m2 | ||||||
| Underweight/normal | 2,400 (1,492) | 74 (72.5) | 1,911 (750.8) | 100 (98.0) | 2.23 (1.13) | 98 (96.1) |
| Overweight | 2,748 (1,480) | 242 (77.1) | 2,028 (897) | 305 (97.1) | 2.28 (0.96) | 308 (98.1) |
| Obese | 2,996 (1,756) | 288 (85.0) | 2,028 (936) | 321 (94.7) | 2.49 (1.12) | 337 (99.4) |
| p | <0.05 | <0.05 | n.s. | n.s. | n.s. | n.s. |
Note: 2,000 mg sodium = 5 g salt (NaCl).
n.s. – non significant
BMI, body mass index; IQR, interquartile range.
a
65–79 years: n = 560; ≥80 years: n = 195.