Table 4.
Urinary I/Cr and urinary Na/Cr ratios according to age group
| Age, yr | Urinary I/Cr ratio, μg/g |
Total | p value | Urinary Na/Cr ratio, mmol/g |
Total | p value | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Deficient (< 85) | Adequate (85–220) | Excessive (> 220) | Low (< 47) | Intermediate (47–114) | High (> 114) | |||||
| 10–18 | 1.6 (13.7) | 3.8 (31.3) | 6.6 (55.0) | 12.0 (100) | < 0.001 | 4.0 (33.2) | 6.1 (50.9) | 1.9 (15.9) | 12.0 (100) | < 0.001 |
| 19–29 | 6.7 (36.0) | 6.8 (37.0) | 5.0 (27.0) | 18.5 (100) | 8.5 (46.1) | 8.4 (45.1) | 1.6 (8.8) | 18.5 (100) | ||
| 30–44 | 4.3 (17.2) | 10.1 (40.2) | 10.7 (42.6) | 25.2 (100) | 6.9 (27.4) | 13.6 (53.9) | 4.7 (18.7) | 25.2 (100) | ||
| 45–59 | 3.2 (11.7) | 10.8 (40.2) | 12.9 (48.1) | 26.8 (100) | 4.1 (15.2) | 14.0 (52.2) | 8.7 (32.6) | 26.8 (100) | ||
| 60–75 | 2.3 (13.3) | 4.9 (27.9) | 10.3 (58.8) | 17.5 (100) | 1.4 (8.0) | 8.0 (45.7) | 8.1 (46.3) | 17.5 (100) | ||
| Total | 18.1 | 36.4 | 45.5 | 100 | 24.9 | 50.1 | 25.0 | 100 | ||
Values are presented as proportion of weighted subjects (%) (proportion of subjects in different age groups, %).
I/Cr, iodine/creatinine; Na/Cr, sodium/creatinine.