scholarly journals Analysis of Factors Influencing Telephone Call Response Rate in an Epidemiological Study

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jorge Matías-Guiu ◽  
Pedro Jesús Serrano-Castro ◽  
José Ángel Mauri-Llerda ◽  
Francisco José Hernández-Ramos ◽  
Juan Carlos Sánchez-Alvarez ◽  
...  
Keyword(s):  
Epidemiological Study ◽  
Response Rate ◽  
Telephone Survey ◽  
Response Rates ◽  
Population Based ◽  
Southern Spain ◽  
Descriptive Epidemiology ◽  
Geographical Differences ◽  
Factors Influencing ◽  
Large Numbers

Descriptive epidemiology research involves collecting data from large numbers of subjects. Obtaining these data requires approaches designed to achieve maximum participation or response rates among respondents possessing the desired information. We analyze participation and response rates in a population-based epidemiological study though a telephone survey and identify factors implicated in consenting to participate. Rates found exceeded those reported in the literature and they were higher for afternoon calls than for morning calls. Women and subjects older than 40 years were the most likely to answer the telephone. The study identified geographical differences, with higher RRs in districts in southern Spain that are not considered urbanized. This information may be helpful for designing more efficient community epidemiology projects.

Facilitating Adolescent Smoking: Who Provides the Cigarettes?

2005 ◽  
Vol 19 (5) ◽  
pp. 355-360 ◽  
Author(s):  
Martha M. White ◽  
Elizabeth A. Gilpin ◽  
Sherry L. Emery ◽  
John P. Pierce
Keyword(s):  
Response Rate ◽  
Telephone Survey ◽  
Large Population ◽  
Population Based ◽  
Adolescent Smoking ◽  
Adolescent Smokers ◽  
Random Digit ◽  
Peer Approval

Purpose. Most adolescent smokers obtain cigarettes through social sources. We examine the extent to which cigarettes are provided by facilitators of legal age to purchase cigarettes. Design. Analyses of data from the 1999 California Tobacco Survey, a large population-based, random-digit–dialed telephone survey, are reported. Setting. California. Subjects. Data were from a subset of 1239 adolescent (12–17 years) respondents who reported ever having smoked a cigarette. The response rate for all adolescents selected for interview was 75.5%. Measures. We describe cigarette providers to adolescents in social (cigarettes given to the adolescent) and economic (someone else buys cigarettes for the adolescent) transactions by the reported facilitator's age. Results. Of the 82.2% ± 2.6% of adolescents who had ever smoked who usually obtained cigarettes from others, 21.6% ± 2.5% used economic transactions; most (60.6% ± 3.4%) were given cigarettes. The majority (73.3% ± 3.6%) of those relying on social sources were given cigarettes by someone <18 years of age; very few were given cigarettes by someone 21+ years old. Most (90.4% ± 2.0%) usually given cigarettes reported friends as facilitators. Of those who relied on economic transactions, 56.1% ± 6.6% reported facilitators who were 18- to 20-year-olds, another 24.7% ±6.3% had suppliers ≥21 years of age. Altogether, 80.8% ± 5.8% of facilitators in economic transactions were ≥18 years of age. Conclusions. Until peer approval of smoking and sharing cigarettes and adult facilitation of adolescent smoking is reduced, it will be difficult to significantly reduce adolescents' access to cigarettes.

scholarly journals External validity of prevalence estimates from the national maternity surveys in England: The impact of response rate

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242815
Author(s):  
Sian Harrison ◽  
Fiona Alderdice ◽  
Maria A. Quigley
Keyword(s):  
Preterm Birth ◽  
Caesarean Section ◽  
External Validity ◽  
Low Birthweight ◽  
Response Rate ◽  
Response Rates ◽  
Population Based ◽  
Breastfeeding Initiation ◽  
Prevalence Estimates ◽  
Survey Estimates

Background Prevalence estimates from surveys with low response rates are prone to non-response bias if respondents and non-respondents differ on the outcome of interest. This study assessed the external validity of prevalence estimates of selected maternity indicators from four national maternity surveys in England which had similar survey methodology but different response rates. Methods A secondary analysis was conducted using data from the national maternity surveys in 2006 (response rate = 63%), 2010 (response rate = 54%), 2014 (response rate = 47%) and 2018 (response rate = 29%). Unweighted and (for the 2014 and 2018 surveys) weighted survey prevalence estimates (with 95%CIs) of caesarean section, preterm birth, low birthweight and breastfeeding initiation were validated against population-based estimates from routine data. Results The external validity of the survey estimates varied across surveys and by indicator. For caesarean section, the 95%CIs for the unweighted survey estimates included the population-based estimates for all surveys. For preterm birth and low birthweight, the 95%CIs for the unweighted survey estimates did not include the population-based estimates for the 2006 and 2010 surveys (or the 2014 survey for preterm birth). For breastfeeding initiation, the 95%CIs for the unweighted survey estimates did not include the population-based estimates for any survey. For all indicators, the effect of weighting (on the 2014 and 2018 survey estimates) was mostly a shift towards the population-based estimates, yet the 95%CIs for the weighted survey estimates of breastfeeding initiation did not include the population-based estimates. Conclusion There were no clear differences in the external validity of prevalence estimates according to survey response rate suggesting that prevalence estimates may still be valid even when survey response rates are low. The survey estimates tended to become closer to the population-based estimates when weights were applied, yet the effect was insufficient for breastfeeding initiation estimates.

scholarly journals Response trends in a national random digit dial survey

2021 ◽  
Vol 1 (1) ◽  
pp. 21-32
Author(s):  
Robert Tortora
Keyword(s):  
Response Rate ◽  
Telephone Survey ◽  
Response Rates ◽  
Completion Rates ◽  
Random Digit ◽  
Random Digit Dial ◽  
Over Time

This paper reviews response trends over 24 consecutive quarters of a National Random Digit Dial telephone survey. Trends for response rates and refusal rates are studied as well as the components of response rate, namely, contact, cooperation and completion rates. In addition other rates, including answering machine, busy and no answer are studied. While refusal rates declined over the six year period, contact and cooperation rates significantly declined causing response rates to decline. Answering machine rates and busy rates also showed a significant increase over time. Finally, correlation’s among the variables of interest are presented. The response rate is negatively correlated with the busy rate, the answering machine rate and the no answer rate. Implications of the above trends are discussed.

scholarly journals Reporting Response Rates for Telephone Surveys Used In Agricultural Economics Research

1994 ◽  
Vol 23 (2) ◽  
pp. 200-206 ◽  
Author(s):  
Sharon I. Gripp ◽  
A.E. Luloff ◽  
Robert D. Yonkers
Keyword(s):  
Data Quality ◽  
Survey Data ◽  
Response Rate ◽  
Telephone Survey ◽  
Response Rates ◽  
Agricultural Economics ◽  
Research Report ◽  
Telephone Surveys ◽  
Economics Research

Response rates are one indicator of a survey's data quality, as a great deal of importance has been placed on the mail survey's response rate. However, a telephone survey's response rate usually is not reported. Even if one is reported, the numbers used in the calculation are rarely defined making the response rate interpretation unclear. Using a recent telephone survey of Pennsylvania dairy managers, this paper demonstrates how telephone survey data should be reported. Essentially, every research report should include a discussion of how the survey was conducted, a disposition table, and well-defined formulas used to calculate response rates.

Comparing face-to-face to web data collection: unit response and costs in a national health survey (Preprint)

2020 ◽  
Author(s):  
Elise Braekman ◽  
Stefaan Demarest ◽  
Rana Charafeddine ◽  
Sabine Drieskens ◽  
Finaba Berete ◽  
...  
Keyword(s):  
Data Collection ◽  
Response Rate ◽  
Response Rates ◽  
Demographic Characteristics ◽  
Unit Response ◽  
Cost Advantage ◽  
Web Data ◽  
Demographic Groups ◽  
Considerable Cost ◽  
The Difference

BACKGROUND Potential is seen in web data collection for population health surveys due to a combination of its cost-effectiveness, implementation ease and the increased internet penetration. Nonetheless, web modes may lead to lower and more selective unit response rates than traditional modes and hence may increase bias in the measured indicators. OBJECTIVE This research assesses the unit response and costs of a web versus F2F study. METHODS Alongside the F2F Belgian Health Interview Survey of 2018 (BHIS2018; n gross sample used: 7,698), a web survey (BHISWEB; n gross sample=6,183) is organized. Socio-demographic data on invited individuals is obtained from the national register and census linkages. Unit response rates considering the different sampling probabilities of both surveys are calculated. Logistic regression analyses examine the association between mode system (web vs. F2F) and socio-demographic characteristics on unit non-response. The costs per completed web questionnaire are compared with these for a completed F2F questionnaire. RESULTS The unit response rate is lower in BHISWEB (18.0%) versus BHIS2018 (43.1%). A lower web response is found among all socio-demographic groups, however, the difference is higher among people older than 65, low educated people, people with a non-Belgian nationality, people living alone and these living in Brussels Capital. Not the same socio-demographic characteristics are associated with non-response in both studies. Having another European (OR (95% CI): 1.60 (1.20-2.13)) or a non-European nationality (OR (95% CI): 2.57 (1.79-3.70)) (compared to having the Belgian nationality) and living in the Brussels Capital (95% CI): 1.72 (1.41-2.10)) or Walloon (OR (95% CI): 1.47 (1.15 - 1.87) region (compared to living in the Flemish region) is only in BHISWEB associated with a higher non-response. In BHIS2018 younger people (OR (95% CI): 1.31 (1.11-1.54)) are more likely to be non-respondent than older people, this was not found BHISWEB. In both studies, lower educated people have a higher change to be non-respondent, but this effect is more pronounced in BHISWEB (OR low vs. high education level (95% CI): Web 2.71 (2.21-3.39)); F2F 1.70 (1.48-1.95)). The BHISWEB study has a considerable cost advantage; the total cost per completed questionnaire is almost three times lower (€41) compared to the F2F data collection (€111). CONCLUSIONS The F2F unit response rate is generally higher, yet for certain groups the difference between web versus F2F is more limited. A considerable cost advantage of web collection is found. It is therefore worthwhile to experiment with adaptive mixed-mode designs to optimize financial resources without increasing selection bias; e.g. only inviting socio-demographic groups more eager to participate online for web surveys while remaining to focus on increasing the F2F response rates for other groups. CLINICALTRIAL Studies approved by the Ethics Committee of the University hospital of Ghent

Factors influencing birth weight in newborns of diabetic and non-diabetic women a population based study

1990 ◽  
Vol 6 (4) ◽  
pp. 427-431 ◽  
Author(s):  
D. Fraser ◽  
S. Weitzman ◽  
J. R. Leiberman ◽  
E. Eschwege
Keyword(s):  
Birth Weight ◽  
Population Based ◽  
Population Based Study ◽  
Factors Influencing

scholarly journals CGRP-antibodies, topiramate and botulinum toxin type A in episodic and chronic migraine: A systematic review and meta-analysis

Cephalalgia ◽  
2021 ◽  
pp. 033310242110181
Author(s):  
Florian Frank ◽  
Hanno Ulmer ◽  
Victoria Sidoroff ◽  
Gregor Broessner
Keyword(s):  
Systematic Review ◽  
Monoclonal Antibodies ◽  
Botulinum Toxin ◽  
Response Rate ◽  
Meta Analysis ◽  
Botulinum Toxin Type A ◽  
Type A ◽  
Response Rates ◽  
Botulinum Toxin Type ◽  
Odds Ratios

Background The approval of monoclonal antibodies for prevention of migraine has revolutionized treatment for patients. Oral preventatives are still considered first line treatments as head-to-head trials comparing them with antibodies are lacking. Methods The main purpose of this study was to provide a comparative overview of the efficacy of three commonly prescribed migraine preventative medication classes. For this systematic review and meta-analysis, we searched the databases CENTRAL, EMBASE, and MEDLINE until 20 March 2020. We included RCTs reporting the 50% response rates for topiramate, Botulinum Toxin Type A and monoclonal antibodies against CGRP(r). Studies were excluded if response rates were not reported, treatment allocation was unclear, or if study quality was insufficient. Primary outcome measure were the 50% response rates. The pooled odds ratios with 95% confidence intervals were calculated with the random effects model. The study was registered at PROSPERO (CRD42020222880). Findings We identified 6552 reports. Thirty-two were eligible for our review. Studies assessing monoclonal antibodies included 13,302 patients and yielded pooled odds ratios for the 50% response rate of 2.30 (CI: 2.11–2.50). Topiramate had an overall effect estimate of 2.70 (CI: 1.97–3.69) with 1989 included patients and Botulinum Toxin Type A achieved 1.28 (CI: 0.98–1. 67) with 2472 patients included. Interpretation Topiramate, botulinum toxin type A and monoclonal antibodies showed higher odds ratios in achieving a 50% response rate compared to placebo. Topiramate numerically demonstrated the greatest effect size but also the highest drop-out rate.

scholarly journals Seroprevalence and correlates of SARS-CoV-2 neutralizing antibodies from a population-based study in Bonn, Germany

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
N. Ahmad Aziz ◽  
Victor M. Corman ◽  
Antje K. C. Echterhoff ◽  
Marcel A. Müller ◽  
Anja Richter ◽  
...  
Keyword(s):  
Neutralizing Antibodies ◽  
Response Rate ◽  
Neutralization Test ◽  
Population Based ◽  
Immunofluorescence Assay ◽  
Test Results ◽  
Community Based ◽  
Population Based Study ◽  
Temporal Course ◽  
Confirmatory Tests

AbstractTo estimate the seroprevalence and temporal course of SARS-CoV-2 neutralizing antibodies, we embedded a multi-tiered seroprevalence survey within an ongoing community-based cohort study in Bonn, Germany. We first assessed anti-SARS-CoV-2 immunoglobulin G levels with an immunoassay, followed by confirmatory testing of borderline and positive test results with a recombinant spike-based immunofluorescence assay and a plaque reduction neutralization test (PRNT). Those with a borderline or positive immunoassay result were retested after 4 to 5 months. At baseline, 4771 persons participated (88% response rate). Between April 24th and June 30th, 2020, seroprevalence was 0.97% (95% CI: 0.72−1.30) by immunoassay and 0.36% (95% CI: 0.21−0.61) when considering only those with two additional positive confirmatory tests. Importantly, about 20% of PRNT+ individuals lost their neutralizing antibodies within five months. Here, we show that neutralizing antibodies are detectable in only one third of those with a positive immunoassay result, and wane relatively quickly.

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