Table 3.
Urinary iodine concentration (UIC), dietary iodine intake, food iodine intake only and iodine knowledge scores among pregnant and lactating women with iodine education and higher education. (Medians and interquartile ranges (IQR)
| Pregnant women | Lactating women | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All women (n 1181) | No received iodine education (n 111) | Received iodine education (n 841) | Non-tertiary education (n 957) | Tertiary education (n 223) | All women (n 504) | No received iodine education (n 39) | Received iodine education (n 384) | Non-tertiary education (n 417) | Tertiary education (n 87) | |||||||||||
| M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | M‡ | IQR | |
| Food iodine intake only (µg/d) | 97·21 | 66·85, 163·90 | 129·14 | 74·73, 198·90 | 95·32* | 67·33, 150·14 | 94·70 | 64·39, 150·07 | 129·78* | 81·58, 194·07 | 91·52 | 55·78, 169·29 | 135·46 | 88·83, 185·60 | 80·03* | 54·42, 158·85 | 84·25 | 54·21, 155·38 | 147·92* | 65·76, 225·18 |
| Dietary iodine intake (µg/d) | 407·16 | 320·40, 513·21 | 454·95 | 345·45, 541·49 | 398·51* | 319·76, 504·49 | 394·21 | 317·09, 504·37 | 441·24* | 352·04, 537·26 | 356·89 | 304·33, 485·63 | 452·38 | 370·91, 594·97 | 344·45* | 302·74, 458·42 | 347·51 | 302·43, 453·29 | 483·39* | 343·95, 563·23 |
| UIC (µg/l) | 179·27 | 106·83, 260·60 | 174·34 | 126·91, 265·81 | 177·76 | 106·33, 258·68 | 176·85 | 104·56, 260·60 | 195·90 | 119·13, 256·80 | 192·81 | 113·35, 276·77 | 142·20 | 76·64, 210·13 | 198·74 | 119·17, 287·05 | 198·74 | 119·23, 289·31 | 153·70* | 90·82, 215·93 |
| Iodine knowledge scores† | ||||||||||||||||||||
| Mean | 12·60 | 12·57 | 12·60 | 12·55 | 12·72 | 12·27 | 12·44 | 12·49 | 12·23 | 12·47 | ||||||||||
| sd | 2·66 | 2·71 | 2·67 | 2·64 | 2·73 | 2·86 | 2·82 | 2·83 | 2·87 | 2·85 | ||||||||||
There were three answers available to the question of whether they had received iodine nutrition education during pregnancy: they had, they had not and not sure if they had. Pregnant and lactating women who were unsure whether they had received education on iodine nutrition were 229 and 81 (data not shown), respectively. Therefore, the food iodine intake only, the dietary iodine intake, UIC and iodine knowledge scores were first compared between these three groups, with differences followed by multiple comparisons.
Statistically significant difference compared to non-tertiary education and no received iodine education (P < 0·05).
Mean (sd).
Median.