Journal of Thyroid Research / 2012 / Article / Tab 2 / Research Article
Iodine Intake and Thyroid Function in Pregnant Women in a Private Clinical Practice in Northwestern Sydney before Mandatory Fortification of Bread with Iodised Salt Table 2 Median and quartiles for UIC by subgroup and P value for test of homogeneity across subgroups.
Variable Values taken (Percent) Median Percentile 25 Percentile 75 P valueParity Primiparas (40%) 85 41 175 0.736 Multiparas (60%) 80 41 161 Education School certificate (25%) 105 52 231 0.002 Higher school certificate (27%) 64 33 117 Tertiary (48%) 86 42 166 Ethnicity Australian (79.3%) 78 41 156 0.582 European (3.5%) 81 39 178 Asian (2.5%) 80 44 185 Filipino (1.1%) 94 41 177 Other (12.3%) 114 56 180 History of thyroid disease Familial and patient (2.2%) 91 51 183 0.351 Familial (14.9%) 90 43 226 Patient (3.3%) 106 72 244 Nil (79.6%) 79 39 156 Vitamin supplements Nil (28.3%) 69 38 136 <0.001 Elevit (31.9%) 71 39 120 Fefol (0.3%) 32 32 32 Blackmores (iodine 150 μ g)
(27.8%) 123 61 226 Fabfol (iodine 150 μ g)
(4.7%) 60 31 78 Other (6.9%) 123 59 260 Vitamin supplement containing iodine No (67.5%) 72 39 141 0.001 Yes (32.5%) 115 48 213 Iodised salt No (78.6%) 81 39 162 0.396 Yes (21.4%) 81 47 185 Milk (grouped) Nil (13.0%) 71 39 180 0.035 <1 serve/day (23.8%) 77 31 126 1 serve/day (42.3%) 75 45 155 >1 serve/day (21.0%) 105 59 208 Dairy (grouped) Nil (19.1%) 101 47 273 0.078 <1 serve/day (22.2%) 76 41 154 1 serve/day (40.7%) 78 34 149 >1 serve/day (18.0%) 87 42 129 Fish (grouped) Nil (29.8%) 72 41 159 0.764 <1 serve/day (15.2%) 83 51 120 1 serve/day (39.1%) 89 38 193 >1 serve/day (16.0%) 87 47 179 Overall
81 41 169