Statistical significance of the differences between splicing indices in different experimental groups was evaluated with the ANOVA test for comparison between the non-matched samples or paired T-test for matched samples (tumors and non-tumorous tissues).
Comparisons between tumour samples and patient-matched normal mucosa were made using the Wilcoxon test for matched pairs.
Differences in distributions across groups were tested using Wilcoxon signed-rank test for matched data.
IAPCC-SV scores of ≥60 were considered "culturally competent" and scores were compared with the t-test for matched pairs.
Methods for analyzing data from case-control and cross-sectional studies: the 2x2 table, chi-square test, Fisher's exact test, odds ratios, Mantel-Haenzel methods, stratification, tests for matched data, logistic regression, conditional logistic regression.
Proportions were compared using the Fisher exact test for independent samples and the McNemar chi-square test for matched pairs.
McNemar's test for matched pairs was used to compare admission and recidivism rates at EDCC and non-EDCC hospitals.
Continuous variables were compared using the Student's t test or the Wilcoxon rank-sum test and the corresponding paired tests for matched patients, as appropriate.
Differences in categorical variables were analyzed using the Chi-square or the Fisher exact test or the McNemar test for matched patients, as appropriate.
Since data were not normally distributed, a Wilcoxon signed-rank test for matched pairs was applied to test for differences in SUVMEAN between ROIs in PETDIXON and PETINPAINTED; p < 0.05 was considered to be statistically significant.
