This question requires candidates to master the concept and content points of oral epidemiological data collation. Data collation is to prepare for data analysis, design the collected original data in groups, summarize them with the prepared collation table, and make statistical analysis after approval. Answers A, B, and D are all work that needs to be done in survey design, and the significance test of answer C is not the content of data collation, but the work in data analysis. Therefore, the correct answer should be e.