6.对数十例相思病例进行分析，以总结发现共同特征或问题，这属于
A: case report
B: cross-sectional study
C: ecological study
D: follow-up study
E: case series analysis
A: case report
B: cross-sectional study
C: ecological study
D: follow-up study
E: case series analysis
举一反三
- Which of the method using a group of individuals as a unit of observation and analysis? A: Ecological study B: Monitor C: Cross-sectional study D: Case analysis E: Outbreak investigation
- Which statement is false about“a case series”? A: It is a controlled medical study B: It has a descriptive study design. C: It is not associated with extensive statistical analysis D: It could be either retrospective or prospective
- What did you learn from this case study?
- 一位研究者对儿童的心理理论发展很感兴趣。她测试了一组3岁儿童的心理理论能力，一年以后又对同一批被试进行了测试。这种研究称为________ A: 个案研究（case study） B: 纵向研究（longitudinal study） C: 横断研究（cross-sectional study） D: 聚合交叉研究（cross-sequential study）
- Which of the following is not a major approach to social work research?( ) A: Experimental method(实验法) B: Evaluation study method C: Case study method D: Normative study method(规范研究法)