In a study of concordance, a sample of identical twins were evaluated for adult-onset diabetes. The data below were collected for this trait:
(1) in 36 identical twin pairs, both showed adult-onset diabetes
(2) in 40 identical twin pairs, only one showed adult-onset diabetes
(3) in 336 identical twin pairs, neither showed adult-onset diabetes
Items (1) and (2) can be used to calculate concordance as follows: 36/(36 + 40) x 100 = 47%.
A. true
B. false
A
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