Non-Probabilistic Sampling in Quantitative Clinical Research

2022 ◽  
Vol 7 (1) ◽  
pp. 0-0
Keyword(s):  
Best Practices ◽  
Quantitative Research ◽  
Sampling Method ◽  
Sampling Methods ◽  
Early Career ◽  
Probability Sampling ◽  
Probabilistic Sampling ◽  
Quantitative Studies ◽  
Health Studies ◽  
Probabilistic Sample

Quantitative researchers need a probabilistic sample to generalise their findings, but research constraints often compel them to use non-probabilistic samples. The use of non-probability sampling methods in quantitative studies has therefore become a norm. Interestingly, even studies published in top-quality journals compromise best practices that the use of non-probabilistic samples requires. Based on a thorough review of relevant studies, we developed a typology of non-probability sampling methods used in quantitative health studies. An attempt was made to discuss the limit of inference under each type of non-probability sampling method. Non-probability sampling in quantitative research was also delineated as a way to maximise response rate. This study is expected to guide students and early career epidemiologists to understand how to apply non-probabilistic sampling methods in quantitative approaches and plausibly document or report their chosen methods.

scholarly journals Pengaruh Harga Dan Kualitas Produk Terhadap Kepuasan Konsumen T-Mart Express Indonesia

2020 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Elizabeth Rahayu
Keyword(s):  
Customer Satisfaction ◽  
Product Quality ◽  
Quantitative Research ◽  
Sampling Method ◽  
Sampling Techniques ◽  
Probability Sampling ◽  
Purposive Sampling

Abstract The purpose of this research is to understand the influence of price and product quality of T-Mart Express Indonesia’s customer satisfaction. This research is a quantitative research by using the SPSS Statistic 22 with 112 respondent of the sample which is T-Mart Express Indonesia consumers in North  Jakarta who have bought the product three times or more by using non-probability sampling method and purposive sampling techniques. The measurement used was a questionnaire that was distributed through Google Form to the respondent. The result of hypothesis analysis shows that price and product quality significantly affect customer satisfaction. Implications and suggestions are explained in the article. Abstrak Tujuan dari penelitian ini adalah untuk memahami pengaruh harga dan kualitas produk terhadap kepuasan pelanggan T-Mart Express Indonesia. Penelitian ini adalah penelitian kuantitatif dengan menggunakan SPSS Statistic 22 dengan sampel sebanyak 112 responden yaitu konsumen T-Mart Express Indonesia di Jakarta Utara yang telah membeli produk tiga kali atau lebih dengan menggunakan metode non probability sampling dan teknik purposive sampling. Pengukuran yang digunakan adalah kuesioner yang dibagikan melalui Google Form kepada responden. Hasil analisis hipotesis menunjukkan bahwa harga dan kualitas produk berpengaruh signifikan terhadap kepuasan pelanggan. Implikasi dan saran dijelaskan pada artikel    

scholarly journals Conducting quantitative studies with the participation of political elites: best practices for designing the study and soliciting the participation of political elites

2020 ◽  
Author(s):  
Barbara Vis ◽  
Sjoerd Stolwijk
Keyword(s):  
Decision Making ◽  
Best Practices ◽  
Quantitative Research ◽  
Large Scale ◽  
Response Rate ◽  
Response Rates ◽  
Political Elite ◽  
Political Elites ◽  
Future Studies ◽  
Quantitative Studies

Abstract Conducting quantitative research (e.g., surveys, a large number of interviews, experiments) with the participation of political elites is typically challenging. Given that a population of political elites is typically small by definition, a particular challenge is obtaining a sufficiently high number of observations and, thus, a certain response rate. This paper focuses on two questions related to this challenge: (1) What are best practices for designing the study? And (2) what are best practices for soliciting the participation of political elites? To arrive at these best practices, we (a) examine which factors explain the variation in response rates across surveys within and between large-scale, multi-wave survey projects by statistically analyzing a newly compiled dataset of 342 political elite surveys from eight projects, spanning 30 years and 58 countries, (b) integrate the typically scattered findings from the existing literature and (c) discuss results from an original expert survey among researchers with experience with such research (n = 23). By compiling a comprehensive list of best practices, systematically testing some widely held believes about response rates and by providing benchmarks for response rates depending on country, survey mode and elite type, we aim to facilitate future studies where participation of political elites is required. This will contribute to our knowledge and understanding of political elites’ opinions, information processing and decision making and thereby of the functioning of representative democracies.

scholarly journals Minat Beli Konsumen Atas Produk Sepeda Motor Yamaha MIO M3

2020 ◽  
Vol 8 (3) ◽  
pp. 271-280
Author(s):  
Kurnia Yudha Anggara ◽  
Miguna Astuti ◽  
Lina Aryani
Keyword(s):  
Data Collection ◽  
Sample Size ◽  
Product Quality ◽  
Random Sampling ◽  
Quantitative Research ◽  
Sampling Method ◽  
Brand Image ◽  
Probability Sampling ◽  
Analysis Technique ◽  
Quality Product

This research is a quantitative research that aims to determine the effect of price, Brand Image and Quality Product. The population to consumers who come to Yamaha dealers in the area of South Jakarta City, the sample size was taken as many as 75 respondents, with probability sampling method, especially Random Sampling. Data collection is done through the distribution of questionaires. The analysis technique used is the method of PLS (Partial Last Square) analysis. The results of this study indicate that (p1) price has significant effect on buying interest. Keywords: Price, Brand Image, Product Quality, and Purchase Interest

A beginner's Guide to Sampling Methods in Medical Research

2021 ◽  
Author(s):  
Moslem Basti ◽  
Farzan Madadizadeh
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Sampling Methods ◽  
Simple Random Sampling ◽  
Cluster Sampling ◽  
Stratified Random Sampling ◽  
Systematic Random Sampling ◽  
Probabilistic Sampling ◽  
Multi Stage ◽  
Main Components

Background: Sampling methods are one of the main components of each research. Familiarity with a variety of sampling methods is essential for researchers. Objective: The main purpose of this study was to teach different probabilistic and non-probabilistic sampling methods to improve the knowledge of researchers in conducting more accurate research. Methods: In this tutorial article, useful information about each sampling method, as well as how to properly use each method and its strengths and weaknesses are provided. Results: Five cases of probabilistic sampling methods and four cases of non-probabilistic sampling methods that are common are mentioned. Probabilistic sampling included simple random sampling, stratified random sampling, cluster sampling, systematic random sampling, and multi-stage random sampling. In addition to introducing each method, its strengths and weaknesses are also mentioned. Conclusion: Probabilistic sampling methods despite limiting assumptions provide more reliable results. Therefore, if it is possible, researchers should use probabilistic sampling methods to increase the accuracy of the study.

scholarly journals Quota Sampling as an Alternative to Probability Sampling? An Experimental Study

2014 ◽  
Vol 19 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Keming Yang ◽  
Ahmad Banamah
Keyword(s):  
Presidential Elections ◽  
Sampling Method ◽  
Sampling Methods ◽  
Response Rate ◽  
Probability Sampling ◽  
Two Factors ◽  
The Difference ◽  
Quota Sampling ◽  
Student Society ◽  
Experimental Survey

In spite of the establishment of probability sampling methods since the 1930s, non-probability sampling methods have remained popular among many commercial and polling agents, and they have also survived the embarrassment from a few incorrect predictions in American presidential elections. The increase of costs and the decline of response rates for administering probability samples have led some survey researchers to search for a non-probability sampling method as an alternative to probability sampling. In this study we aim to test whether results from a quota sample, believed to be the non-probability sampling method that is the closest in representativeness to probability sampling, are statistically equivalent to those from a probability sample. Further, we pay special attention to the effects of the following two factors for understanding the difference between the two sampling methods: the survey's topic and the response rate. An experimental survey on social capital was conducted in a student society in Northeast England. The results suggest that the survey topic influences who responded and that the response rate was associated with the sample means as well. For these reasons, we do not think quota sampling should be taken as an acceptable alternative to probability sampling.

scholarly journals Pengaruh bauran promosi dan gaya hidup terhadap minat beli pada kedai kopi serasi

2019 ◽  
Vol 2 (2) ◽  
pp. 137-144
Author(s):  
Yosie Anne Putri
Keyword(s):  
Purchase Intention ◽  
Quantitative Research ◽  
Sampling Method ◽  
Management Team ◽  
Sampling Techniques ◽  
Probability Sampling ◽  
Research Show

The purpose of this research is to understand the influence of promotion mix and lifestyle towards purchase intention of Kedai Kopi Serasi product. This research is a quantitative research with 130 respondent of sample which are consumers of Kedai Kopi Serasi in Cilincing who coincidentally met with the researcher if deemed concerned was appropriate to be used as a source of data by using non-probability sampling method and incedential sampling techniques. The result of this research show that promotion mix influence significantly to purchase intention and lifestyle influence significantly to purchase intention. The implications of this research can be a reference for the management team in formulating Kedai Kopi Serasi increase purchase intention strategy through promotion mix and lifestyle.

scholarly journals PENGARUH PENGETAHUAN PERPAJAKAN, SANKSI PAJAK, KESADARAN PERPAJAKAN DAN TINGKAT PENDIDIKAN TERHADAP MOTIVASI WAJIB PAJAK ORANG PRIBADI DALAM PEMENUHAN KEWAJIBAN PAJAK

2021 ◽  
Vol 17 (1) ◽  
pp. 85-96
Author(s):  
Rangga Rian Wira Ari Kusuma ◽  
Hadli Achmad ◽  
Masamah Masamah
Keyword(s):  
Quantitative Research ◽  
Sampling Method ◽  
Sampling Technique ◽  
Education Level ◽  
Primary Data ◽  
Probability Sampling ◽  
Minimum Sample ◽  
The Individual

This study aims to determine the effect of tax knowledge, tax sanctions, tax awareness and education level on the motivation of individual taxpayers in fulfilling tax obligations. This study uses quantitative research using primary data obtained from questionnaires. The population in this study is the individual taxpayer registered at the Palembang Ilir Timur Tax Office Pratama. In this study the sampling using the Non Probability Sampling method and sampling technique using the Slovin method, with a population of 156,145 people and a minimum sample of 100 respondents can be taken.

Sampling Methods

2020 ◽  
Vol 36 (2) ◽  
pp. 224-226 ◽  
Author(s):  
Andrea E. Berndt
Keyword(s):  
Sampling Method ◽  
Sampling Methods ◽  
Sampling Techniques ◽  
Design Quality ◽  
Quality Research ◽  
Probability Sampling ◽  
Critical Questions ◽  
Potential Problems ◽  
Pros And Cons

Knowledge of sampling methods is essential to design quality research. Critical questions are provided to help researchers choose a sampling method. This article reviews probability and non-probability sampling methods, lists and defines specific sampling techniques, and provides pros and cons for consideration. In addition, issues related to sampling methods are described to highlight potential problems.

scholarly journals ANALISIS KUALITAS AUDITOR DAN FAKTOR YANG MEMPENGARUHINYA (Studi pada Auditor Pemerintah di BPKP Perwakilan Provinsi Lampung)

2019 ◽  
Vol 11 (1) ◽  
pp. 20-27
Author(s):  
Hestin Ratna Wati ◽  
Victoria Ari Palma Akadiati
Keyword(s):  
Regression Analysis ◽  
Empirical Evidence ◽  
Quantitative Research ◽  
Sampling Method ◽  
Audit Quality ◽  
Probability Sampling ◽  
Quality Audit ◽  
Purposive Sampling

The purpose of this study is to obtain empirical evidence to be known and analyzed about theinfluence of expertise, independence and ethics on audit quality in Government Auditors at BPKPRepresentatives of Lampung Province. Expertise is the ability of an auditor, the independence of mentalattitudes that can not be influenced by others, the ethics of a set of principles or values. This researchwas conducted at BPKP Lampung Province Representative.Sampling technique using non probability sampling with purposive sampling method, thesample used as much as 52 respondents. This research includes quantitative research. Using multiplelinear regression analysis. The results of this study show (1) Expertise affect the Quality Audit, (2)Independence affects Quality (3) Ethics does not affect the Quality Audit (4) Expertise, Independenceand Ethics affect the Quality Audit

scholarly journals Pengaruh persepsi resiko dan kualitas e-commerce terhadap keputusan konsumen membeli fashion online

2017 ◽  
Vol 8 (2) ◽  
pp. 185-195
Author(s):  
Lucky Lhaura Van FC ◽  
Lisnawita Lisnawita
Keyword(s):  
Data Analysis ◽  
Computer Science ◽  
Perceived Risk ◽  
Quantitative Research ◽  
Sampling Method ◽  
High Quality ◽  
Probability Sampling ◽  
Consumer Decisions ◽  
Online Buying

Abstrak- Penelitian ini bertujuan untuk mengetahui pengaruh persepsi konsumen tentang resiko terhadap keputusan pembelian produk fashion toko online ,kedua pengaruh media e-Commerce terhadap keputusan pembelian produk fashion.. pengaruh persepsi konsumen tentang resiko dan kualitas pelayanan secara bersama-sama terhadap keputusan pembelian produk fashion toko online , penelitian ini termasuk penelitian kuantitatif. Populasi penelitian adalah mahasiswa/wi dan dosen fakultas Ilmu Komputer yang pernah melakukan pembelian online. Pengumpulan data dilakukan dengan angket ,dimana analisis data menggunakan metode non probability sampling yang telah didapat sebanyak 110 sampel penelitian, analisis data menggunakan fitur cronbach’s alfa.Hasil dari pPeneltian ini adalah sSemakin rendah resiko yang dipersepsikan oleh konsumen, maka semakin tinggi tingkat keputusan konsumen untuk membeli fashion secara online. Semakin berkualitas pelayanan e-commerce yang disediakan para pengelola situs belanja fashion online, maka semakin tinggi tingkat keputusan konsumen untuk membeli fashion secara online. Rendahnya persepsi resiko dan tingginya kualitas pelayanan elektronik secara bersamaan akan mampu meningkatkan keputusan konsumen untuk membeli fashion secara online. Kata Kunci : Persepsi Resiko, kualitas e-commerce, metode non probability sampling, cronbach’s alfa Abstract- This research is perceived risk and quality of e-commerce on fashion product online buying decision in faculty of Computer Science . This study includes quantitative research. The population of research is students and faculty lecturer of Computer Science who ever made online purchasing. Data collection is done by questionnaire, where data analysis using non probabity sampling method has been obtained as many as 110 research samples, data analysis using cronbach's alpha feature. Result from Peneltian This is the lower the risk perceived by the consumer, the higher the level of consumer decisions to buy fashion online.high qualified ecommerce services provided by managers of online fashion shopping sites, the higher the level of consumer decisions to buy fashion online. The low perception of risk and the high quality of electronic services will simultaneously increase consumer's decision to buy fashion online. Keywords: perceived risk, quality of e-commerce , non probabity sampling method, cronbach’s alfa

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