However, like the effect of positive CT, the effect of negative CT is similar for both members of a DZ twin pair, resulting in an increased DZ twin correlation.
The purpose of this discordant twin pair analysis was to control for age, sex, genetics (100% for MZ and≈50% for DZ), and shared environmental factors, such as intrauterine and rearing environment (100% for both MZ and DZ) [ 56].
Reasons for going off protocol included disease progression (37 for DZ and 33 for D), patient refusal (eight for DZ and eight for D), unacceptable toxicity (two for DZ and five for D) and others (two for DZ and four for D).
Intra-class correlations for all the cortisol parameters were substantially greater for MZ (range 0.41 0.57) than for DZ (0.11 0.29) twin pairs.
A subgroup of mice receiving intraperitoneal injection of three doses of normal saline (n=4 for DZ and n=3 for AS xenografts) or 100 mg/kg of 2DG (n=6 for both DZ and AS xenografts) was killed on the 15th day after injection of NB cells for the observation of the early effect of 2DG treatment.
Within-twin correlations are roughly comparable for MZ and DZ twins; for instance, the association between CES-D symptoms and anxious attachment is 0.45 and 0.40 for the MZ and DZ "A" twins respectively.
When DZ-sib correlations are less than half of MZ correlations, dominance is indicated, because D correlates perfectly for MZ but only 25%% for DZ twin- and sib pairs.
Twins tended to resemble one another on the nonverbal auditory task, but this was equally true for DZ as for MZ twins, suggesting the twin similarity was the result of environmental influences that they shared.
(15) In our study, for 38 patients (19 for DZ and 19 for D) with NSCLC and high baseline NTX levels, the median OS was 8.6 months for the DZ group and 11.2 months for the D group (hazard ratio for death, 1.60; 95% CI, 0.75 3.44).
Intraclass correlation coefficient (rMZ and rDZ, for MZ and DZ twins, respectively) for the timing of the emergence of salivary cortisol circadian rhythm was estimated by anova.
