Statistical analysis
Normality of the data was tested using the Shapiro-Wilk or
Kolmogorov-Smirnov tests. Data are presented as median and
inter-quartile range (IQR). Comparison between unrelated variables was
conducted with Student’s t-test or Mann–Whitney U test, as appropriate.
The chi-square and Fisher’s exact tests were used for comparison between
categorical variables. Significance was accepted at p < 0.05.
Statistical analyses were conducted using the IBM Statistical Package
for the Social Sciences (IBM SPSS v.19; IBM Corporation Inc, Armonk, NY,
USA).
The study protocol was approved by the ”Sheba Medical Center”
Institutional Review Board (ID 4287-17-SMC) on the 28 of June 2017.