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Table 4 Relationship of urinary iodine concentration with various parameters

From: Urinary iodine concentration and thyroid volume of pregnant women attending antenatal care in two selected hospitals in Ashanti Region, Ghana: a comparative cross-sectional study

  Urinary Iodine Concentration [n (%)] P value
< 150(μg/L) 150–249(μg/L) 250–499(μg/L) ≥500(μg/L) TOTAL
Age group (years)       0.801
  < 20 7 (41.2%) 9 (52.9%) 1 (5.9%) 0 (0.0%) 17 (100%)  
 20–25 44 (55.0%) 20 (25.0%) 15 (18.8%) 1 (1.3%) 80 (100%)  
 26–30 36 (42.4%) 30 (35.3%) 19 (22.4%) 0 (0.0%) 85 (100%)  
 31–35 15 (46.9%) 9 (28.1%) 8 (25.0%) 0 (0.0%) 32 (100%)  
 36–40 9 (45.0%) 3 (15.0%) 8 (40.0%) 0 (0.0%) 20 (100%)  
  > 40 2 (40.0%) 2 (40.0%) 0 (0.0%) 1 (20.0%) 5 (100%)  
Trimester       0.755
 First 23 (43.4%) 22 (41.5%) 8 (15.1%) 0 (0.0%) 53 (100%)  
 Second 33 (44.6%) 19 (25.7%) 22 (29.7%) 0 (0.0%) 74 (100%)  
 Third 57 (50.9%) 32 (28.6%) 21 (18.8%) 2 (1.8%) 112 (100%)  
Education       0.445
 None 41 (54.0%) 21 (27.6%) 13 (17.1%) 1 (1.3%) 76 (100%)  
 Primary 17 (54.8%) 8 (25.8%) 5 (16.1%) 1 (3.2%) 31 (100%)  
 JHS 24 (40.0%) 25 (41.7%) 11 (18.3%) 0 (0.0%) 60 (100%)  
 SHS 19 (42.2) 13 (28.9%) 13 (28.9%) 0 (0.0%) 45 (100%)  
 Tertiary 12 (44.4%) 6 (22.2%) 9 (33.3%) 0 (0.0%) 27 (100%)  
Gravidity       0.562
  < 3 62 (48.1%) 37 (28.7%) 29 (22.5%) 1 (0.8%) 129 (100%)  
 3–5 43 (47.8%) 26 (28.9%) 20 (22.2%) 1 (1.1%) 90 (100%)  
  > 5 8 (40.0%) 10 (50.0%) 2 (10.0%) 0 (0.0%) 20 (100%)  
Use Of Iodised Salt      0.115
 Yes 46 (42.2%) 34 (31.2%) 28 (25.7%) 1 (0.9%) 109 (100%)  
 No 67 (51.5%) 39 (30.0%) 23 (17.7%) 1 (0.8%) 130 (100%)  
Thyroid volume (ml)      0.028
  ≤ 18 108 (46.6%) 72 (31.0%) 50 (21.6%) 2 (0.9%) 232 (100%)  
  > 18 5 (71.4%) 1 (14.3%) 1 (14.3%) 0 (0.0%) 7 (100%)  
  1. P values are based on chi-square test