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Table 3 Distribution of schoolchildren according to goiter prevalence

From: Current iodine nutrition status and progress toward elimination of iodine deficiency disorders in Jazan, Saudi Arabia

Goiter rate Residence no. (%) Gender no. (%) Total
  Rural Urban Male Female  
Grade 0 202 (86.3) 73 (100) 121 (95.3) 145 (85.6) 275(89.6)
Grade 1 18 (7.7) - 5 (3.9) 13 (7.2) 10 (5.9)
Grade 2 14 (6.0) - 1 (0.8) 13 (7.2) 14 (4.6)
Total 234 (100) 73 (100) 127(100) 180 (100) 307(100)
P-value 0.004 0.012