ANSWER
Validity, Reliability, and Sampling for Research Proposal
Information on Your Sample: Sampling Notes
Participants will be adults between 25 and 60 years of either gender.
Included are those diagnosed with hypertension within the past five years.
Currently following a recommended course of therapy with lifestyle changes and drugs.
able of reading and comprehending either Spanish or English.
Exclusion criteria include history of secondary hypertension—that is, brought on by an underlying illness.
major cognitive deficits or mental health disorders keeping one from participating.
Pregnant people (for varying physiological reasons).
Sample count:
There is a 150 person planned sample size. A power analysis was used to ascertain this value such that, at a significance level of 0.05, there was enough power (80%) to identify a modest effect size.
Why This Sample Appropriate?
Since hypertension is common across sexes and age groups, this sample reflects the target population—individuals with hypertension—and permits different points of view.
The size guarantees that the study is sufficiently powered to provide statistically significant findings while yet under control within the available resources and schedule.
Veracity
Continuity in Data Gathering:
To lower variability, data will be gathered online and in-person utilising a planned survey disseminated.
To guarantee consistency, all participants—either orally or in writing—will get the identical directions.
During in-person meetings, trained research assistants will distribute the survey and track online complements for completeness.
Why is the measurement tool reliable?
Based on past research showing great internal consistency (Cronbach’s alpha > 0.85), the Hypertension Self- Management Behaviour Questionnaire (HSMBQ) is the main measuring instrument.
To verify that the instrument generates consistent answers in the research population, a pilot test with fifteen participants will be carried out.
To guarantee consistent results over time, a selection of participants will complete the questionnaire twice, one week apart, therefore evaluating test-retest reliability.
Validity
Guaranturing a current sample:
Participants will be gathered via community health centres, primary care offices, and online hypertension support groups therefore guaranteeing access to a wide and pertinent sample.
Participants will be confirmed to satisfy the inclusion and exclusion requirements via a pre-screening questionnaire.
Efforts will be directed at randomly choosing individuals from the qualified population to lower selection bias.
Investigating the Measurement Tool’s Validity:
Three specialists in hypertension control have examined and validated the questionnaire to make sure it fairly gauges the desired constructs (e.g., medication adherence, dietary compliance).
Validity of Constructions Strong links to clinical outcomes including blood pressure control and adherence rates have helped the HSMBQ to be validated in earlier investigations.
Pilot testing the questionnaire will help to guarantee its validity within the study population by means of feedback, thereby improving any unclear items.
Final Thought
The suggested research makes use of recognised and trustworthy instruments to gather consistent data and a well chosen sample to guarantee relevance and representateness. These steps taken together improve the generalizability and reliability of the research results.
QUESTION
For this section of your research proposal assignment, you will focus on the sampling, reliability, and validity of your research proposal. This section will include information on sampling, reliability, and validity.
Information on your sample
- Sampling basic information (age, gender, criteria, etc.)
- Sample size
- Explain why your sample is appropriate for your study
Reliability
- Explain how your data collection process is consistent and reliable
- Explain why your measurement tool is reliable
Validity
- Explain how you will ensure you have a valid sample
- Explain how you tested the validity of your measurement tool