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. 2017 Jun 26;54(2):96–98. doi: 10.1016/S0377-1237(17)30490-2

TABLE 1.

Food specific attack rates

Food item Those who ate Number ill Attack rate (%) Those who did not eat Number ill Attack rate (%) Diff in attack rate X2
Rice (Pulao) 102 77 75.5 1 1 100 (+) 24.5
Puri 41 24 58.5 62 54 87 (+) 28.5
Chicken 96 78 81.2 7 1 14.4 66.8 12.48*
Egg curry 87 66 74.7 16 9 56.2 18.5 1.64
Vegetables (tinned) 56 46 82 47 29 61.6 20.11 4.33**
Potatoes 54 41 75.9 49 34 69.3 6.6 0.25
Dal 94 67 71.3 9 7 77.8 (+) 6.5
Papad 101 76 75.3 2 2 100 (+) 24.7
Kheer 75 58 77.3 28 20 71.4 5.9 0.12
Rasgulla 72 55 76.4 31 23 74.2 2.2 0.0012
Other sweet 75 51 68 28 17 60.7 7.3 0.48
*

X2 (with Yates correction) = 12.48 (p < 0.01)

**

X2 = 4.33 (p < 0.05)