Characteristics of study sample.

n/a =  not applicable.
a. Based on data from n = 768 respondents of which 429 women and 336 men (due to missing values), columns do not necessarily add to 768.
b. Multiple answers were possible.
c. Significantly more patients with the indication ‘surveillance for colonoscopy for hereditary colon carcinoma/polyposis/polyps’ were seen in the tertiary center (41.3%) compared to the general teaching hospital (23.6%; p<0.001).
d. Under which: loss of weight, diarrhea, eating disorders etc.

n/a = 不适用（not applicable）。
a. 本研究数据来自768名受访者，其中女性429人、男性336人（存在缺失值情况），因此数据各列的样本量之和未必等于768。
b. 本项调查允许选择多个答案。
c. 与综合教学医院（23.6%）相比，三级医疗中心接诊的「遗传性结肠癌/息肉病/息肉结肠镜监测」适应证患者占比显著更高（41.3%；p<0.001）。
d. 涵盖症状包括：体重下降、腹泻、进食障碍等。