Table 4 UIC (μg/L) of 8 to 10 years old children with different household SIC (Median(P25, P75))
Year | Non-iodized salt group | Low salt iodine group | High salt iodine group | χ2 | P | |||
|---|---|---|---|---|---|---|---|---|
N(%) | UIC | N(%) | UIC | N(%) | UIC | |||
1999 | 70 (5.4) | 181.7 (119.0,245.1) | 219 (17.0) | 164.3 (98.1258.4) | 999 (77.6) | 228.5 (145.0,322.0) | 35.4 | 0.000 |
2005 | 7 (1.6) | 117.8 (71.8214.5) | 76 (17.4) | 200.0 (143.7261.0) | 354 (81.0) | 198.3 (124.0,268.8) | 4.0 | 0.133 |
2011 | 37 (10.3) | 176.4 (125.8259.2) | 184 (51.1) | 190.8 (130.6262.5) | 139 (38.6) | 170.5 (116.5251.7) | 2.8 | 0.244 |
2014 | 217 (14.4) | 171.1 (124.1235.5) | 1038 (68.7) | 171.0 (119.1239.4) | 255 (16.9) | 176.2 (133.3226.4) | 1.3 | 0.514 |
2017 | 285 (23.5) | 166.0 (98.3239.9) | 850 (70.0) | 189.5 (121.9274.0) | 80 (6.6) | 175.5 (108.5316.3) | 10.5 | 0.005 |