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8263 Social & Preventive Medicine

Bias is defind as?

ASpurious association between two variables
BA quantified relationship between exposure and disease
CSystematic error in determination of association between exposure and disease
DStatistical technique used to evaluate the effect of a treatment by comparing treated and non treated
Social & Preventive Medicine
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8270 Social & Preventive Medicine

Which of the following statements is true about net protein utilization –

AIt is the ratio of total nitrogen retained by total N2 intake multiplied by 100
BIf net protein utilization is high, the amount of protein required in diet is high
CIt is the ration of energy from protein to total energy in diet
DIt is amount of one amino acid per gram of a protein divided by the amount of same amino acid per gram of egg protein
Social & Preventive Medicine
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