In cooperation with the Sports Association of the Palatinate (SBP), a survey was conducted on substance use by recreational and amateur athletes. Distribution of the online questionnaire took place by means of chain-referral sampling, and questions on substance use were presented using the randomized response technique (RRT) to protect the anonymity of respondents and prevent socially desirable...

The Randomized Response Technique (RRT) is a survey method especially developed to improve the accuracy of answers to questions on threatening topics. This paper reports the results of two meta-analyses on RRT studies, the first on the results of six individual validation studies, and the second on 31 comparative studies. The focus of these metaanalyses was on the performance of RRTs compared t...

The randomized response technique (Warner, 1965) is a data collection procedure that allows researchers to collect sensitive information while guaranteeing privacy to respondents. For example, if one question from a pair of questions that have the same response options is selected randomly and in private, the question answered by a given individual will not be known to the researcher. However, ...

This 'paper presents a new randomized response model that combines Kim and Warde's (2004) stratified Warner's randomized response technique using optimal allocation with the unrelated question randomized response model. The empirical studies performed show that, for the prior information given, the new model is more efficient in terms of variance (in the case of completely truthful reporting) a...

this article focuses on the estimation of population proportion when the study variable is sensitive in nature. two implicit randomized response techniques are proposed where the unrelated trait can be chosen subjectively. in addition to unbiased estimation of population proportion and variance, an empirical study is conducted to inspect the relative efficiency facet of the proposed techniques....

A new randomized response technique for estimating the population total, or mean of a quantitative variable is proposed. It provides high degree protection to respondents because they never report their data. Therefore, it may be favorably perceived by them and increase willingness cooperate. Instead revealing true value characteristic under investigation, respondent only states whether greater...

Application of PBT in Ghana A pilot test of PBT to assess its feasibility in estimating stillbirths, miscarriages and induced abortions was conducted in Accra, Ghana (Oliveras et al. 2008). Data were collected during prenatal and maternity visits made from November 2003 through January 2004 at three public and two private clinics. As such, the sample reflects women with access to prenatal and m...

In this paper, interesting improvements in [1] and [2] randomized response techniques have been proposed. The proposed randomized response technique applies Polya's urn process (see [3]) to obtain data from respondents. One of the suggested technique requires reporting the number of draws to observe a fixed number of cards of certain type. On the contrary, the number of cards of a certain type ...

The randomized response technique is an effective survey method designed to elicit sensitive information while ensuring the privacy of the respondents. In this article, we present some new results on the randomization response model in situations wherein one or two response variables are assumed to follow a multinomial distribution. For a single sensitive question, we use the well-known Hopkins...