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Table 2 Mothers’ data characterization (n = 691)

From: Assessment of iodine importance and needs for supplementation in school-aged children in Portugal

  Total
(n = 691)
Health study/work area
(n = 107; 15.5%)
Others study/work area
(n = 584; 84.5%)
χ2 Φ
Knowledge about iodine… Correct = 516 (74.7%)
Incorrect = 41 (5.9%)
Do not know = 134 (19.4%)
Correct = n = 97 (90.6%)
Incorrect = 2 (1.9%)
Do not know = 8 (7.5%)
Correct = 419 (71.7%)
Incorrect = 39 (6.7%)
Do not know = 126 (21.6%)
17.095 0.157
Function of iodine… Correct = 121 (17.5%)
Incorrect = 348 (50.4%)
Do not know = 570 (32.1%)
Correct = 35 (32.7%)
Incorrect = 50 (46.7%)
Do not know = 22 (20.6%)
Correct = 86 (14.7%)
Incorrect = 298 (51.0%)
Do not know = 200 (34.3%)
20.249 0.171
Iodine supplementation… Yes = 110 (15.9%)
No = 8 (1.2%)
Do not know = 573 (82.9%)
Yes = 22 (20.6%)
No = 0 (0.0%)
Do not know = 85 (79.4%)
Yes = 88 (15%)
No = 8 (1.4%)
Do not know = 488 (83.6%)
2.038 0.054