เปรียบเทียบวิธี

	การวิเคราะห์เนื้อหาเชิงปริมาณแบบฐานคณะบุคคล	การวิเคราะห์เนื้อหาเชิงปริมาณตามช่วงเวลา
สาขาวิชา	การออกแบบการวิจัย	การออกแบบการวิจัย
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1950s–1980s (formalized in communication research)	1950s onward; longitudinal application widely adopted in media research by the 1970s–1980s
ผู้ริเริ่ม	Synthesized from Berelson's content analysis tradition and panel study methodology	Developed within communication and media studies; codified by Berelson (1952) and extended by Riffe, Lacy, Fico
ประเภท	Longitudinal observational design	Quantitative observational research design
แหล่งต้นตำรับ	Neuendorf, K. A. (2002). The Content Analysis Guidebook. Sage Publications. ISBN: 978-0761919773	Riffe, D., Lacy, S., Watson, B., & Fico, F. (2019). Analyzing Media Messages: Using Quantitative Content Analysis in Research (4th ed.). Routledge. ISBN: 9781138490536
ชื่อเรียกอื่น	longitudinal content analysis, repeated-measures content analysis, panel content analysis, tracking content analysis	longitudinal content analysis, repeated-measure content analysis, time-series content analysis, longitudinal QCA
ที่เกี่ยวข้อง	5	5
สรุป	Panel-based quantitative content analysis applies systematic, numeric coding of media or textual content to the same fixed panel of sources at multiple time points. By holding the source panel constant while measurements repeat over time, researchers can track genuine change in content patterns rather than confounding source variation with temporal change. It is widely used in communication, media studies, and political science to monitor how coverage, framing, or topic salience evolves.	Longitudinal quantitative content analysis systematically codes and counts features of texts, images, or media messages gathered at two or more points in time, enabling researchers to track how content changes, how themes rise or fall in prevalence, and how media or institutional messaging responds to external events. The design merges the structured measurement logic of quantitative content analysis with the temporal tracking power of longitudinal observation.