Inclusion criteria and exclusion criteria
All included studies meet the following criteria: (1) studies published
in English or Chinese; (2) studies used a cross-sectional, case–control
or clinical cohort design; (3)
studies
that measured resistin levels in both case and healthy control groups;
(4) studies offered sufficient data; and (5) only the most recent or
largest sample size study was included for duplicated publications.
The exclusion criteria were as follows: (1) review articles, conference
abstracts and case reports; (2) articles did not contain plasma/serum
resistin levels of CD or UC patients or healthy controls; (3) duplicate
reports or ambiguous data; and (4) studies were not performed in humans.