scholarly journals Chocolate bar as an incentive did not increase response rate among physiotherapists: a randomised controlled trial

2008 ◽  
Vol 1 (1) ◽  
pp. 34 ◽  
Author(s):  
Gro Jamtvedt ◽  
Sarah Rosenbaum ◽  
Kristin Dahm ◽  
Signe Flottorp
Keyword(s):  
Randomised Controlled Trial ◽  
Response Rate ◽  
Controlled Trial ◽  
Increase Response Rate ◽  
Randomised Controlled

scholarly journals Effectiveness of SMS messaging for diarrhoea measurement: a factorial cross-over randomised controlled trial

2020 ◽  
Author(s):  
Ryan Trevor Titus Rego ◽  
Samuel Watson ◽  
Philbert Ishengoma ◽  
Philemon Langat ◽  
Hezekiah Pireh Otieno ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Text Messaging ◽  
Response Rate ◽  
Financial Incentive ◽  
Controlled Trial ◽  
Response Rates ◽  
Lower Response ◽  
Lower Response Rate ◽  
The Mean ◽  
Randomised Controlled

Abstract Background Text messaging systems are used to collect data on symptom prevalence. Using a text messaging system, we evaluated the effects of question load, question frequency, and financial incentive on response rates and reported infant diarrhoea rates in an infant diarrhoea survey. Methods We performed a factorial cross-over randomised controlled trial of an SMS surveying system for infant diarrhoea surveillance with treatments: financial incentive (yes/no), question load (1-question/3-question), and questioning frequency (daily/fortnightly). Participants progressed through all treatment combinations over eight two-week rounds. Data were analysed using multivariable logistic regressions to determine the impacts of the treatments on the response rates and reported diarrhoea rates. Attitudes were explored through qualitative interviews. Results For the 141 participants, the mean response rate was 47%. In terms of percentage point differences (ppd), daily questioning was associated with a lower response rate than fortnightly (-1·2[95%CI:-4·9,2·5]); high (3-question) question loads were associated with a lower response rate than low (1-question) question loads (-7·0[95%CI:-10·8,-3·1]); and financial incentivisation was associated with a higher response rate than no financial incentivisation (6·4[95%CI:2·6,10·2]). The mean two-week diarrhoea rate was 36·4%. Daily questioning was associated with a higher reported diarrhoea rate than fortnightly (29·9[95%CI:22·8,36·9]); with little evidence for impact by incentivisation or question load. Conclusions Close to half of all participants responded to the SMS survey. Daily questioning evoked a statistically higher rate of reported diarrhoea, while financial incentivisation and low (1-question) question loads evoked higher response rates than no incentive and high (3-question) question loads respectively. Trial Registration The protocol was registered on ISRCTN on the 20 th of March 2019 under number ISRCTN11410773 .

scholarly journals Effectiveness of SMS messaging for diarrhoea measurement: a factorial cross-over randomised controlled trial

2020 ◽  
Author(s):  
Ryan Trevor Titus Rego ◽  
Samuel Watson ◽  
Philbert Ishengoma ◽  
Philemon Langat ◽  
Hezekiah Pireh Otieno ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Text Messaging ◽  
Response Rate ◽  
Financial Incentive ◽  
Controlled Trial ◽  
Response Rates ◽  
Lower Response ◽  
Lower Response Rate ◽  
The Mean ◽  
Randomised Controlled

Abstract BackgroundText messaging systems are used to collect data on symptom prevalence. Using a text messaging system, we evaluated the effects of question load, question frequency, and financial incentive on response rates and reported infant diarrhoea rates in an infant diarrhoea survey.MethodsWe performed a factorial cross-over randomised controlled trial of an SMS surveying system for infant diarrhoea surveillance with treatments: financial incentive (yes/no), question load (1-question/3-question), and questioning frequency (daily/fortnightly). Participants progressed through all treatment combinations over eight two-week rounds. Data were analysed using multivariable logistic regressions to determine the impacts of the treatments on the response rates and reported diarrhoea rates. Attitudes were explored through qualitative interviews.ResultsFor the 141 participants, the mean response rate was 47%. In terms of percentage point differences (ppd), daily questioning was associated with a lower response rate than fortnightly (-1·2[95%CI:-4·9,2·5]); high (3-question) question loads were associated with a lower response rate than low (1-question) question loads (-7·0[95%CI:-10·8,-3·1]); and financial incentivisation was associated with a higher response rate than no financial incentivisation (6·4[95%CI:2·6,10·2]).The mean two-week diarrhoea rate was 36·4%. Daily questioning was associated with a higher reported diarrhoea rate than fortnightly (29·9[95%CI:22·8,36·9]); with little evidence for impact by incentivisation or question load.ConclusionsClose to half of all participants responded to the SMS survey. Daily questioning evoked a statistically higher rate of reported diarrhoea, while financial incentivisation and low (1-question) question loads evoked higher response rates than no incentive and high (3-question) question loads respectively.Trial RegistrationThe protocol was registered on ISRCTN on the 20th of March 2019 under number ISRCTN11410773.

scholarly journals A Randomised Controlled Trial of Email Versus Mailed Invitation Letter In A National Longitudinal Survey of Physicians.

2022 ◽  
Author(s):  
Benjamin Harrap ◽  
Tamara Taylor ◽  
Grant Russell ◽  
Anthony Scott
Keyword(s):  
Randomised Controlled Trial ◽  
Response Rate ◽  
Controlled Trial ◽  
Intervention Group ◽  
Response Rates ◽  
Longitudinal Survey ◽  
Control Group ◽  
Lower Response ◽  
Percentage Points ◽  
Randomised Controlled

Abstract Background: Despite the low cost of using email to distribute surveys to medical practitioners, email invitations have been associated with lower response rates, potentially increasing response bias and reducing external validity. We examine if there is a difference in response rates from using email rather than a mailed invitation letter in a nationally representative longitudinal survey of qualified physicians. Methods: We use a parallel randomised controlled trial during the 11th annual wave of the Medicine in Australia: Balancing Employment and Life (MABEL) longitudinal survey of doctors. Participants were from previous waves of MABEL and newly invited in Wave 11. The control group was invited using a mailed paper letter (including a paper survey plus instructions to complete online) and three mailed paper reminders. The intervention group was approached in the same way apart from the second reminder when they were approached by email only. The primary outcome is the response rate and the statistical analysis was blinded.Results: 18,247 doctors were randomly allocated to the control (9,125) or intervention group (9,127), with 9,108 and 9,107 included in the final analysis. Using intention to treat analysis, the response rate in the intervention group was 35.92% compared to 37.59% in the control group, a difference of -1.66 percentage points (95% CI: -3.06 to -0.26). The difference was larger for General Practitioners (-2.76 percentage points, 95% CI: -4.65 to -0.87) compared to other specialists (-0.47 percentage points, 95% CI: -2.53 to 1.60). For those who supplied an email address, the average treatment effect on the treated was higher at -2.63 percentage points (95% CI: -4.50 to -0.75) for all physicians, -3.17 percentage points (95% CI: -5.83 to -0.53) for General Practitioners, and -2.1 percentage points (95% CI: -4.75 to 0.56) for other specialists. Conclusions: For qualified physicians, using email to invite participants to complete a survey leads to lower response rates compared to a mailed letter. Lower response rates need to be traded off with the lower costs of using email rather than mailed letters.

scholarly journals Acupuncture for the Treatment of Oculomotor Paralysis: A Pilot Randomised Controlled Trial

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Jia-Qi Bi ◽  
Wei Li ◽  
Qi Yang ◽  
Bao-lin Li ◽  
Qing-Gang Meng ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Adverse Events ◽  
Response Rate ◽  
Controlled Trial ◽  
Sham Acupuncture ◽  
Acupuncture Group ◽  
Secondary Outcome ◽  
Palpebral Fissure ◽  
Significant Difference ◽  
Randomised Controlled

This study consisted of a single centre randomised controlled trial with two parallel arms: an acupuncture group (n=20) with 27 affected eyes and a sham group (n=20) with 23 affected eyes. Participants in the acupuncture group received acupuncture treatment once daily, three times weekly for four weeks. Participants assigned to the control group received sham acupuncture, the same protocol as that used for the acupuncture group but without insertion of needles into the skin. The primary outcome measure was the cervical range of motion (CROM) score. Secondary outcome measures were the palpebral fissure size, response rate, and adverse events. All 40 participants completed the study. In the comparison of acupuncture and sham acupuncture, a significant difference was observed between acupuncture and sham acupuncture in CROM score (21.37±15.16and32.21±19.54, resp.) (P<0.05) and palpebral fissure size (7.19±2.94and5.41±2.45, resp.) (P<0.05). Response rate was also significantly different in the acupuncture group (P<0.05). No adverse events were reported in both groups in this study. In summary, it was demonstrated that acupuncture had a feasibility positive effect on oculomotor paralysis.

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