Table 3.
Constituent analysis of iodine intake and multivariate linear regression equations according to population group, Armenia, September–November 2016
| Ln(Adj. UIC)=4·738+(0·0031×UNaC)+(0·0044×SI) | ||||
|---|---|---|---|---|
| SAC | Intake source | n | % | Model fit |
| Native | 114 | 46 | Adj. R 2=0·23 | |
| Processed food salt | 87 | 35 | P=2·2×10−16 | |
| Household salt | 47 | 19 | ||
| Ln(Adj. UIC)=5·221+(0·0013×Adj. UNaC)+(0·000051×SI) | ||||
| PW | Intake source | n | % | Model fit |
| Native | 185 | 81 | Adj. R 2=0·21 | |
| Processed food salt | 40 | 18 | P=2·2×10−16 | |
| Household salt | 2 | 1 | ||
| Ln(Adj. UIC)=5·193+(0·0026×Adj. UNaC)+(0·0029×SI) | ||||
| WRA | Intake source | n | % | Model fit |
| Native | 180 | 56 | Adj. R 2=0·17 | |
| Processed food salt | 97 | 30 | P=1·7×10−14 | |
| Household salt | 43 | 13 | ||
SAC, school-age children; PW, pregnant women; WRA, non-pregnant women of reproductive age; Ln(Adj. UIC), natural log of adjusted urinary iodine concentration (in μg/l); Adj. UNaC, adjusted urinary Na concentration (in mmol/l); SI, salt iodine content (in mg/kg).