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For the packets forwarded by the suspected node, the delay is calculated by dividing the actual delay by the expected delay and the validity is calculated by dividing the number of valid packets to the number of all packets.
The reliability of SF-36 is analyzed by Cronbach's alpha coefficient, split-half coefficient, theta and omega coefficient, the validity is calculated by confirmatory factor analysis (CFA) and known-group methods.
Convergent and discriminant validity is calculated by Pearson correlation coefficient, NA: not applicable We calculated intraclass correlation coefficients between the child self-reports and parent proxy-reports (Table 9).
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Convergent validity was calculated using Pearson's correlation coefficient between the total score on Strauss Carpenter scale and scores on the reference scales at baseline (GAF and Sheehan), as we considered they were continuous variables.
Criterion validity was calculated for fourteen different index tests using eleven different gold standards.
Set validity and discrimination validity were calculated for each of the dimensions of the questionnaire.
The sample size needed to procedure medium correlation (0.30) in the examination of discriminant validity was calculated.
Intrarater reliability and validity were calculated using the anthropometrist (and later the CVD epidemiologist) as the "gold standard".
A degree of item's discriminant validity was calculated as a correlation between items and scores of other domains.
Criterion validity was calculated for selected parts of the questionnaire by correlating respondents' research experience with relevant research item scores.
The construct validity was calculated for the 42 item survey using Cronbach's alpha, r = 0.89 (n = 265), where 1 indicates 'perfect' validity [ 2].
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