Retention of Older Adults in Longitudinal Health Studies
This paper critically analyzes Strotmeyer et al.'s (2010) longitudinal study on the retention of older adults in the Cardiovascular Health Study. The review examines the study's hypothesis, research design, sampling criteria, statistical methods, and conclusions regarding how visit type—clinic, in-home, or telephone—affects follow-up retention among patients aged 65 to 102. The analysis evaluates the appropriateness of the longitudinal epidemiological design, the representativeness of the sample with respect to age, sex, and race, and the validity of the statistical tests employed. It concludes that in-home and phone follow-ups are effective alternatives for maintaining clinical care in aging populations who face physical and cognitive barriers to in-person visits.
- Introduction and Research Question: Hypothesis and rationale for studying visit retention
- Study Design and Intervention: Longitudinal design and intervention contact details
- Sample Characteristics and Sampling Criteria: Demographic breakdown and representativeness of sample
- Statistical Methods and Analytical Approach: Tests used and appropriateness of analytical models
- Findings and Clinical Implications: Conclusions on alternative visits and clinical care
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What makes this paper effective
- The paper maintains a clear evaluative focus throughout, systematically assessing each component of the source study—hypothesis, design, sampling, statistics, and conclusions—rather than simply summarizing it.
- The student correctly identifies the type of hypothesis (directional and simple) and links it to the study's measurable outcomes, demonstrating methodological awareness.
- The critique is balanced: the paper acknowledges strengths (large sample size, population-representative demographics) while noting limitations (no power analysis, incomplete ethnic representation in sampling criteria).
Key academic technique demonstrated
This paper demonstrates systematic research critique, a core skill in health sciences and social science courses. The student moves methodically through each element of the study—hypothesis formation, design appropriateness, sample selection, statistical validity, and inference accuracy—mirroring the structure used in formal peer review. Direct quotations from the source are used to ground each evaluative claim in textual evidence.
Structure breakdown
The paper is organized around the components of research appraisal rather than a traditional argument structure. It opens with the research question and hypothesis, proceeds through study design and intervention details, addresses sampling criteria, evaluates the statistical methods used, and closes with an assessment of the study's inferences and clinical significance. Each section builds logically on the previous one, creating a cohesive analytical review.
Introduction and Research Question
Older patients over the age of 80, due to health complications such as dementia and depressive symptoms, often do not attend additional follow-up appointments. The authors of the study under review explain that repeated in-person visits help better identify risk factors in this population. Although no explicit research question is stated, the authors highlight the use of a study to confirm the hypothesis of whether repeated in-person follow-ups help address problems experienced as patients age. As Strotmeyer et al. (2010) explain, "We hypothesized that the type of visit would be related to key demographic, lifestyle, health and function characteristics and that the oldest aged participants would have the poorest retention for in-person visits, particularly clinic visits" (p. 697).
This is a directional hypothesis because retention rates are directly associated with increasing age. It is also a simple hypothesis because it directly states a cause-and-effect relationship. When tested, the hypothesis revealed that in-home visits could help improve retention of follow-up care for older patients.
References
Strotmeyer, E. S., Arnold, A. M., Boudreau, R. M., Ives, D. G., Cushman, M., Robbins, J. A., & Newman, A. B. (2010). Long-term retention of older adults in the Cardiovascular Health Study: Implications for studies of the oldest old. Journal of the American Geriatrics Society, 58(4), 696–701.
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