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 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 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 RegistrationThe protocol was registered on ISRCTN on the 20th of March 2019 under number ISRCTN11410773.

scholarly journals Multicentre, randomised controlled trial of PDSAFE, a physiotherapist-delivered fall prevention programme for people with Parkinson’s

2019 ◽  
Vol 90 (7) ◽  
pp. 774-782 ◽  
Author(s):  
Kim Chivers Seymour ◽  
Ruth Pickering ◽  
Lynn Rochester ◽  
Helen C Roberts ◽  
Claire Ballinger ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Fall Prevention ◽  
Controlled Trial ◽  
Intervention Group ◽  
Prevention Programme ◽  
Control Group ◽  
Chair Stand ◽  
Subgroup Analyses ◽  
Randomised Controlled ◽  
Fall Prevention Programme

ObjectiveTo estimate the effect of a physiotherapist-delivered fall prevention programme for people with Parkinson’s (PwP).MethodsPeople at risk of falls with confirmed Parkinson’s were recruited to this multicentre, pragmatic, investigator blind, individually randomised controlled trial with prespecified subgroup analyses. 474 PwP (Hoehn and Yahr 1–4) were randomised: 238 allocated to a physiotherapy programme and 236 to control. All participants had routine care; the control group received a DVD about Parkinson’s and single advice session at trial completion. The intervention group (PDSAFE) had an individually tailored, progressive home-based fall avoidance strategy training programme with balance and strengthening exercises. The primary outcome was risk of repeat falling, collected by self-report monthly diaries, 0–6 months after randomisation. Secondary outcomes included Mini-BESTest for balance, chair stand test, falls efficacy, freezing of gait, health-related quality of life (EuroQol EQ-5D), Geriatric Depression Scale, Physical Activity Scale for the Elderly and Parkinson’s Disease Questionnaire, fractures and rate of near falling.ResultsAverage age is 72 years and 266 (56%) were men. By 6 months, 116 (55%) of the control group and 125 (61.5%) of the intervention group reported repeat falls (controlled OR 1.21, 95% CI 0.74 to 1.98, p=0.447). Secondary subgroup analyses suggested a different response to the intervention between moderate and severe disease severity groups. Balance, falls efficacy and chair stand time improved with near falls reduced in the intervention arm.ConclusionPDSAFE did not reduce falling in this pragmatic trial of PwP. Other functional tasks improved and reduced fall rates were apparent among those with moderate disease.Trial registration numberISRCTN48152791.

scholarly journals Efficacy of a smartphone-based coaching program for addiction prevention among apprentices: study protocol of a cluster-randomised controlled trial

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Severin Haug ◽  
Raquel Paz Castro ◽  
Andreas Wenger ◽  
Michael P. Schaub
Keyword(s):  
Randomised Controlled Trial ◽  
Cigarette Smoking ◽  
Internet Use ◽  
Controlled Trial ◽  
Intervention Group ◽  
Cluster Randomised Controlled Trial ◽  
Control Group ◽  
Addiction Prevention ◽  
Cluster Randomised ◽  
Randomised Controlled

Abstract Background A large proportion of apprentices shows addictive behaviours like cigarette smoking, alcohol, cannabis, or compulsive Internet use, others do not show such behaviours at all. ready4life is a smartphone application-based coaching program for apprentices, which takes into account the heterogeneity of adolescent addictive behaviour by promoting life skills and reducing risk behaviours. The main objective of the planned study is to test the efficacy of ready4life for addiction prevention among apprentices in Switzerland within a controlled trial. Methods/design The efficacy of the ready4life coaching program will be tested in comparison to an assessment only control group, within a cluster-randomised controlled trial with one follow-up assessment after 6 months. At the beginning of the program, participants of the intervention group will receive an individual profile, showing areas in which they have sufficient resources and in which there is a need for coaching. Based on this feedback, they can select two out of the following six program modules: stress, social skills, Internet use, tobacco/e-cigarettes, cannabis, and alcohol. Participants of the intervention group will receive individualised coaching by a conversational agent (chatbot) for a period of four months. The coaching relies on motivational and social-cognitive principles of behaviour change. Within weekly dialogues, the coach provides individually tailored information in different formats, such as videoclips, texts, or pictures. Study participants will be 1318 apprentices with a minimum age of 15, recruited in approximately 100 vocational school classes in Switzerland. Primary outcome will be a composite measure for addictive behaviours including (1) at risk-drinking, (2) tobacco/e-cigarette smoking, (3) cannabis use, and (4) problematic Internet use. Discussion The study will reveal whether this universally implementable but individually tailored intervention approach is effective in preventing the onset and escalation of addictive behaviors among apprentices. Trial registration ISRCTN59908406 (registration date: 21/10/2020).

scholarly journals Assessment of the Effectiveness of a Computerised Decision-Support Tool for Health Professionals for the Prevention and Treatment of Childhood Obesity. Results from a Randomised Controlled Trial

Nutrients ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 706 ◽  
Author(s):  
George Moschonis ◽  
Maria Michalopoulou ◽  
Konstantina Tsoutsoulopoulou ◽  
Elpis Vlachopapadopoulou ◽  
Stefanos Michalacos ◽  
...  
Keyword(s):  
Decision Support ◽  
Childhood Obesity ◽  
Randomised Controlled Trial ◽  
Healthcare Professionals ◽  
Controlled Trial ◽  
Intervention Group ◽  
Decision Support Tool ◽  
Control Group ◽  
Support Tool ◽  
Randomised Controlled

We examined the effectiveness of a computerised decision-support tool (DST), designed for paediatric healthcare professionals, as a means to tackle childhood obesity. A randomised controlled trial was conducted with 65 families of 6–12-year old overweight or obese children. Paediatricians, paediatric endocrinologists and a dietitian in two children’s hospitals implemented the intervention. The intervention group (IG) received personalised meal plans and lifestyle optimisation recommendations via the DST, while families in the control group (CG) received general recommendations. After three months of intervention, the IG had a significant change in dietary fibre and sucrose intake by 4.1 and −4.6 g/day, respectively. In addition, the IG significantly reduced consumption of sweets (i.e., chocolates and cakes) and salty snacks (i.e., potato chips) by −0.1 and −0.3 portions/day, respectively. Furthermore, the CG had a significant increase of body weight and waist circumference by 1.4 kg and 2.1 cm, respectively, while Body Mass Index (BMI) decreased only in the IG by −0.4 kg/m2. However, the aforementioned findings did not differ significantly between study groups. In conclusion, these findings indicate the dynamics of the DST in supporting paediatric healthcare professionals to improve the effectiveness of care in modifying obesity-related behaviours. Further research is needed to confirm these findings.

scholarly journals Postcards from the EDge: 5-year outcomes of a randomised controlled trial for hospital-treated self-poisoning

2013 ◽  
Vol 202 (5) ◽  
pp. 372-380 ◽  
Author(s):  
Gregory L. Carter ◽  
Kerrie Clover ◽  
Ian M. Whyte ◽  
Andrew H. Dawson ◽  
Catherine D'Este
Keyword(s):  
Randomised Controlled Trial ◽  
Psychiatric Hospital ◽  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Treatment As Usual ◽  
Psychiatric Admissions ◽  
Bed Days ◽  
Randomised Controlled ◽  
Event Rates

BackgroundRepetition of hospital-treated self-poisoning and admission to psychiatric hospital are both common in individuals who self-poison.AimsTo evaluate efficacy of postcard intervention after 5 years.MethodA randomised controlled trial of individuals who have self-poisoned: postcard intervention (eight in 12 months) plus treatment as usualv.treatment as usual. Our primary outcomes were self-poisoning admissions and psychiatric admissions (proportions and event rates).ResultsThere was no difference between groups for any repeat-episode self-poisoning admission (intervention group: 24.9%, 95% CI 20.6-29.5; control group: 27.2%, 95% CI 22.8-31.8) but there was a significant reduction in event rates (incidence risk ratio (IRR)=0.54, 95% CI 0.37-0.81), saving 306 bed days. There was no difference for any psychiatric admission (intervention group: 38.1%, 95% CI 33.1-43.2; control group: 35.5%, 95% CI 30.8-40.5) but there was a significant reduction in event rates (IRR=0.66, 95% CI 0.47-0.91), saving 2565 bed days.ConclusionsA postcard intervention halved self-poisoning events and reduced psychiatric admissions by a third after 5 years. Substantial savings occurred in general hospital and psychiatric hospital bed days.

scholarly journals Effects of a kindergarten intervention on vegetables served and staff’s food-related practices: results of a cluster randomised controlled trial – the BRA study

2020 ◽  
Vol 23 (6) ◽  
pp. 1117-1126
Author(s):  
Anne Himberg-Sundet ◽  
Anne Lene Kristiansen ◽  
Lene Frost Andersen ◽  
Mona Bjelland ◽  
Nanna Lien
Keyword(s):  
Randomised Controlled Trial ◽  
Vegetable Intake ◽  
Controlled Trial ◽  
Intervention Group ◽  
Cluster Randomised Controlled Trial ◽  
Control Group ◽  
Public And Private ◽  
Cluster Randomised ◽  
Block Randomisation ◽  
Randomised Controlled

AbstractObjective:The aim of the current study was to evaluate the effect on frequency, variety and amount of vegetables served and staff’s food-related practices in the multicomponent BRA intervention.Design:Cluster randomised controlled trial, conducted between Spring 2015 and Spring 2016. For allocation of the kindergartens, a stratified block randomisation was used. Data were collected in three ways: (i) a questionnaire for pedagogical leaders assessing the variety and frequency of vegetables served, including staff’s food-related practices assumed to be related to vegetable intake; (ii) a questionnaire for kindergarten assistants assessing staff’s food-related practices; (iii) a 5-d weighted vegetable diary assessing amount of vegetables served in a department.Setting:The target group for this study was public and private kindergartens in the counties of Vestfold and Buskerud, Norway.Participants:A total of seventy-three kindergartens participated.Results:At follow-up I, the amount of vegetables served increased by approximately 20 g per person per day (P = 0·002), and the variety in served vegetables increased by one-and-a-half kind per month (P = 0·014) in the intervention group compared to the control group. No effects on the frequency of vegetables served or on staff’s food-related practices were found.Conclusions:The BRA intervention was successful in increasing the amount and variety of vegetables served within intervention kindergartens. Further research is needed to understand the mechanisms that can affect the staff’s food-related practices.

scholarly journals Effectiveness of online tailored advice to prevent running-related injuries and promote preventive behaviour in Dutch trail runners: a pragmatic randomised controlled trial

2017 ◽  
Vol 52 (13) ◽  
pp. 851-858 ◽  
Author(s):  
Luiz Carlos Hespanhol ◽  
Willem van Mechelen ◽  
Evert Verhagen
Keyword(s):  
Randomised Controlled Trial ◽  
Preventive Intervention ◽  
Absolute Risk ◽  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Number Needed To Treat ◽  
Preventive Behaviour ◽  
Randomised Controlled ◽  
Tailored Advice

BackgroundTrail running is popular worldwide, but there is no preventive intervention for running-related injury (RRI).AimTo evaluate the effectiveness of adding online tailored advice (TrailS6) to general advice on (1) the prevention of RRIs and (2) the determinants and actual preventive behaviour in Dutch trail runners.MethodsTwo-arm randomised controlled trial over 6 months. 232 trail runners were randomly assigned to an intervention or control group. All participants received online general advice on RRI prevention 1 week after baseline. Every 2 weeks, participants in the intervention group received specific advice tailored to their RRI status. The control group received no further intervention. Bayesian mixed models were used to analyse the data.ResultsTrail runners in the intervention group sustained 13% fewer RRIs compared with those in the control group after 6 months of follow-up (absolute risk difference −13.1%, 95% Bayesian highest posterior credible interval (95% BCI) −23.3 to −3.1). A preventive benefit was observed in one out of eight trail runners who had received the online tailored advice for 6 months (number needed to treat 8, 95% BCI 3 to 22). No significant between-group difference was observed on the determinants and actual preventive behaviours.ConclusionsOnline tailored advice prevented RRIs among Dutch trail runners. Therefore, online tailored advice may be used as a preventive component in multicomponent RRI prevention programmes. No effect was observed on determinants and actual preventive behaviours.Trial registration numberThe Netherlands National Trial Register (NTR5431).

User-driven design of child restraint information to reduce errors in use: a pilot randomised controlled trial

2019 ◽  
Vol 26 (5) ◽  
pp. 432-438 ◽  
Author(s):  
Alexandra B Hall ◽  
Catherine Ho ◽  
Bianca Albanese ◽  
Lisa Keay ◽  
Kate Hunter ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Controlled Trial ◽  
Intervention Group ◽  
Instructional Materials ◽  
Control Group ◽  
P Value ◽  
Point Increase ◽  
Comprehension Score ◽  
Child Restraint ◽  
Randomised Controlled

BackgroundIncorrect use of child restraints is a long-standing problem that increases the risk of injury in crashes. We used user-centred design to develop prototype child restraint instructional materials. The objective of this study was to evaluate these materials in terms of comprehension and errors in the use of child restraints. The relationship between comprehension and errors in use was also explored.MethodsWe used a parallel-group randomised controlled trial in a laboratory setting. The intervention group (n=22) were provided with prototype materials and the control group (n=22) with existing instructional materials for the same restraint. Participants installed the restraint in a vehicle buck, secured an appropriately sized mannequin in the restraint and underwent a comprehension test. Our primary outcome was overall correct use, and our secondary outcomes were (1) comprehension score and (2) percent errors in the installation trial.ResultsThere was 27% more overall correct use (p=0.042) and a higher mean comprehension score in the intervention group (mean 17, 95% CI 16 to 18) compared with the control group (mean 12, 95% CI 10 to 14, p<0.001). The mean error percentage in the control group was 23% (95% CI 16% to 31%) compared with 14% in the intervention group (95% CI 8% to 20%, p=0.056). For every one point increase in comprehension, there was an almost 2% (95% CI −2.7% to −1.0%) reduction in errors (y=45.5–1.87x, p value for slope <0.001).ConclusionsConsumer-driven design of informational materials can increase the correct use of child restraints. Targeting improved comprehension of informational materials may be an effective mechanism for reducing child restraint misuse.

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