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Table 2 The relation between IQ and birth order

From: Nutritional reflection on growth and development among intellectually disabled children

Birth order IQ test ≤ 75 IQ test > 75 χ2 p
 ≤ 2
 No 24 40 3.280 0.070
 % 55.8% 70.17%   
 > 2
 No 19 17   
 % 44.2% 29.83%   
Total
 No 43 57   
 % 100% 100%