199
Impact of monetary rewards added to both trial arms on participant retention in a randomised trial
198
Impact of newsletters on participant retention in randomised trials
197
Effectiveness and cost effectiveness of providing a pen at recruitment on participant retention in randomised trials
196
Implementation and maintenance of blinding of participants in the RAPSODI-UK surgical trial
195
Pre-notification of trial participants by newsletter to improve response rates to questionnaires
194
The neoGASTRIC SWAT: to evaluate the effectiveness of presenting parents with different modes of trial information
193
Text message invitation to recruit people with COPD to a pragmatic trial
191
Effects of the timing of telephone contact with potential participants on the return of 12-week questionnaires
190
Identifying motivators of participation and key expectations of participants in randomised trials
189
How does offering a choice of data collection mode affect recruitment and data collection in a feasibility study of a cancer symptom awareness intervention (TIC-TOC Study)?
188
Stakeholder perceptions of recruitment to SafeBoosC III trial
187
Impact on recruitment of adding a pictorial aid to a patient information sheet
186
Impact of data collection frequency on participant retention in the HEAL-COVID platform clinical trial
184
Identifying barriers and facilitators to research in long term care facilities
183
Effect of skin tone on the diagnostic accuracy of pulse oximeters for measuring blood oxygen in patients in a randomised trial
182
Impact of a return postage strategy on retention in randomised trials
181
What is the impact on participant retention when an electronic reminder is integrated into the design of a randomised trial?
180
The effectiveness and cost effectiveness of financial incentives for increasing participant retention rates in randomised trials
179
Impact of pre-notifications on retention in 17-year follow-up of very preterm born adolescents (PIPARI-SWAT)
178
Effects of SMS pre-notification and reminders on electronic questionnaire return using a sequential multiple assignment randomised trial (SMART) design
177
Effects on recruitment rates of regular scheduled calls between the coordinating team and sites
176
Co-designing and pilot testing an infographic to support patients and families through the REMAP-CAP consent process
174
Comparing health technologies for participant adherence and trial outcome data collection
173
Does a practice-level educational intervention improve the timely assessment of adults with shingles?
172
Qualitative study within a randomised trial to explore the uncertainties surrounding perioperative cancer trial methodology
171
Use of an additional video link of an informed consent conversation to improve recruitment into perioperative cancer trials
170
Assessment of clinical utility of the Navio web-based app in protocol adherence and PRO completion in the HoT trial
169
Electronic versus paper based Patient Reported oUtcomes CollEction (SPRUCE)
168
Effects of enhanced monitoring and training of trial sites on the application of a treatment protocol in an international randomised trial
167
Risk-based trial monitoring: Site performance metrics across time
166
Effects on trial recruitment and retention of including a picture book with the participant information sheet
165
Rapid qualitative study of patient consent in co-recruiting studies
164
Effects of increasing incentives on participant response to data collection at 6 months follow up
163
Using an animated video to optimise participant engagement with a complex intervention within a randomised trial
162
Testing Online Recruitment Methods Via Social Media
161
‘Principled’ versus usual approach for sharing information about potential benefits and harms of trial interventions in patient information leaflets
160
An enhanced participant information leaflet and multimedia intervention to improve the quality of informed consent in a randomised clinical trial enrolling people living with HIV and obesity
159
Feasibility and effectiveness of a decision aid for family members considering trial participation on behalf of an adult who lacks capacity to consent
158
Validation of clinical events in the DaRe2THINK dataenabled clinical trial
157
Timing and value of participant vouchers to improve questionnaire return rates in the STADIA (STAndardised DIagnostic Assessment for children and adolescents with emotional difficulties) Trial.
156
Impact of an animated video translated into four commonly spoken languages on recruitment into the TICH-3 trial
155
Evidence-based enhanced participant information sheet (PIS) for recruiting caregivers to a multicentre randomised trial
154
Follow-up within global surgEry triAls: a qualiTative investigation to improvE trial Retention (FEATHER)
152
A qualitative investigation of patient recruitment to a perioperative feasibility randomised trial
151
Impact of a waitlist comparator design on recruitment, retention and outcomes in open-label parallel-group randomised trials
150
Anaesthesia Choice for Creation of Arteriovenous Fistulae (ACCESS Study): A Qualitative Study within a Trial (SWAT)
149
Characteristics of participants who choose to complete electronic or paper patient reported outcome measures (PROs)
148
Optimising data capture of prescribed medication in pregnancy
147
Effects on retention of different weight assessment approaches during trials of Behavioural Weight Management Interventions (BWMI)
146
Adding 'Withdrawal Slips' within follow up reminders for questionnaires
145
The Sticker Swat: Does a trial logo sticker placed on the outside of the envelope encourage the return of postal questionnaires
144
Social Incentive Retention Cover Letter to Improve Questionnaire Response Rates
143
Providing monetary incentives to participants to improve completion rates of questionnaires by referred co-respondents
142
Use of a video animation to improve participant understanding, engagement and compliance with an intervention in a cluster randomised trial of stroke survivors
141
Does patients' guided self-reflection on their illness increase engagement with and recruitment to clinical trials
140
A factorial, cluster randomised trial of an enhanced associate principal investigator (API) training package and an additional digital nudge delivered by a trial coordinator
139
A qualitative investigation of reasoning behind decisions to decline participation in a clinical trial
138
Improving participant retention using a pen as an incentive with the reminder for a postal follow-up questionnaire
137
A factorial embedded randomised controlled trial to test the impact on recruitment of a pen incentive and a brief participant information sheet (PROMETHEUS in MSS3)
136
Impact on Recruitment of Using an Invitation Letter Informed by Self-Determination Theory
135
Online follow-up and automatic adjustment of a physiotherapy device to optimise intervention delivery in a physiotherapy trial
134
Impact of an enhanced education and training package on protocol adherence and staff confidence
133
Branded gift and letter from PPI group to enhance questionnaire response rate in a randomised trial
132
Patient Support Group for Research (PURPOSE)
131
Modes of data collection for subjective outcomes at followup: comparing a choice and a failure-based approach
130
SMS prompts to improve compliance with study procedures
129
Effects of video guidance and a helpdesk on recruitment and retention in a Delphi survey for the development of a core outcome set
128
Timing of recruitment of pregnant women to participate in a trial
127
Qualitative exploration of occupational therapists’ perspectives on barriers and enablers to helping conduct research
126
Feasibility and diagnostic accuracy of Telephone Administration of an adapted patient-reported Wound HeaLth QuestiONnaire for assessing surgical site infection following abdominal surgery in low- and middle-income countries (TALON)
125
Comparison of trial-collected and routinely-collected death data
124
Exploring the impact of ineligibility on individuals expressing interest in a trial aimed at improving daily functioning regarding perceptions of self, research and likelihood of future participation: A PPI-infused qualitative SWAT
123
Seldom heard: Listening to patients and the public during intervention development
122
Perspectives of elderly trial participants with hypertension on modes of delivery of individual summary reports
121
What are the effects on retention and follow-up of courtesy telephone calls versus postcards to trial participants following enrolment?
120
The impact of audio-recording study discussions on recruitment rates: the audio study
119
Effects on retention of giving trial participants a thank you card following each study visit
118
Timing of text message and email communication to improve questionnaire return rates
116
Impact on recruitment of adding an Infographic to a Patient Information Leaflet
115
Comparisons of invitation methods used to recruit participants to a trial of a smoking reduction intervention
114
Effects of telephone calls or postcards to trial participants following enrolment on retention in a randomised trial
112
Effects on recruitment of a personalised compared with a standard study invitation letter
111
Staff training to improve participant recruitment into surgical randomised trials
110
Printing the primary outcomE on Pink PapER versus standard paper to increase participant engagement to postal questionnaires (PEPPER)
109
The effectiveness of a text message reminder which participants can respond to, compared with a ‘no reply’ text message on questionnaire response rates
107
Effects of a multi-trial programmable animation platform on the efficiency and success of pre-screening and subsequent recruitment to a randomised trial
106
Effects of a video clip on recruitment into a randomised trial
105
Effects of a patient-designed-and-informed participant information sheet versus a standard, researcher-designed information sheet on recruitment to a randomised trial
104
Various on-paper strategies to improve participation in a postal survey
102
Addition of a pictorial aid to the patient information leaflet to improve recruitment in a randomised trial
101
Design of the patient information leaflet: dOes ParTicipant InforMatIon ShEet Design affect the recruitment rate into an interventional trial (OPTIMISED)?
100
Patient and family co-developed participant information to improve recruitment rates, retention, and patient understanding of a randomised trial
99
Impact of recruitment plan on participant recruitment
98
Delivering site set-up training to groups of sites versus individually
97
TRECA (TRials Engagement in Children and Adolescents)
96
Unconditional or conditional incentives for initial and followup postal questionnaires in a clinical trial
95
Concurrent validity of the PROMIS-29 in older adults with multimorbidity
94
Incentive (financial and pen) to enhance recruitment to a randomised trial
93
Offer of a free yoga class to participants in the control group on completion of the trial follow-up, to enhance retention and reduce contamination
92
Pen incentive to enhance retention in a randomised trial
91
Using theory-based enhancements to improve engagement with trial participant newsletters
90
Does the time at which a participant incentive is given affect the retention rate?
89
Including a theoretically informed leaflet in a participant take-home pack of questionnaires to increase response rate
88
Telephone versus SMS reminders to participants about attending a screening assessment for randomised trials
87
Do participants complete the original or the reminder postal follow up questionnaire?
86
Advance notification of trial participants before outcome data collection to improve retention
84
Same-day Consent vs Delayed Consent in a Randomised Trial
83
Postal vs telephone follow-up
82
Sending Christmas cards to trial participants to improve retention.
81
A Telephone Reminder to Enhance Adherence to Interventions in Randomised Trials
80
Post-it Note SWAT
79
Effect of a birthday card on retention and data completion rates in trials involving children
77
TYPhooN (Thank You and Pre Notification) SWAT Protocol: sending pre-notification emails to trial participants before outcome measurement
76
Sending pre-notification cards to trial participants before outcome measurement to improve retention
75
Effects of different types of feedback presentation in an online Delphi study
74
Effects of the use of multi-criteria decision analysis (MCDA) on decision quality in an online Delphi (Delphi MDQ)
73
Effects of feedback method on ranking in an online Delphi study
72
Effects of question section order on prioritization of items by stakeholder groups in an online Delphi study
71
Effects of population compared to purposive sampling for consensus in an online Delphi study
70
Multi criterion decision analysis (MCDA) to improve decision quality in an online Delphi study
69
Evaluation of offering an incentive before or after completion of a 2-year follow-up postal questionnaire on the response rate in parents of preterm babies
67
Effects of an enhanced trainee Principal Investigator package and digital nudging on monthly recruitment rates
66
Site visits to initiate recruitment in a clinical trial: Does it matter who conducts the visit?
65
Strategies to optimise retention to an online randomised controlled trial for relatives of people with severe mental illness
64
Identifying opinions on the features needed for making a study successful
63
Does local radio and social media advertisement increase recruitment?
62
The influence of different healthcare professionals delivering an intervention in a medication optimisation trial
61
Telephone reminders to people who do not respond to a postal invitation to join a trial
60
Mentioning scarcity of trial places in text (SMS) reminders
59
Offering financial incentives to potential trial participants to improve recruitment
58
Enhancing Recruitment Using Teleconference and Commitment Contract (ERUTECC)
57
Provision of information about a core outcome set and trial questionnaire completion
56
Patient decision aid to reduce decisional conflict in patients considering entry into a prospective cohort study
55
Prioritising key motivators and challenges influencing informal caregivers to participate in randomised trials
54
Giving trial participants a thank you note or card after each study visit
53
Including a photograph on the invitation letter for a prospective study
52
Statistical methods for compensating for missing longitudinal data in a cluster randomised trial
51
Promoting group identity to improve questionnaire return rate
50
Comparison of the small modified Rankin Scale questionnaire with face-to-face modified Rankin Scale
49
Effects of the use of different tone in reminder emails to nonrespondents for an online survey
48
Effects of a £10 note on trial retention
47
Incentives and reminders to complete an online survey
46
Participants' perspectives and preferences on clinical trial result dissemination
44
Timing of text message prompts to increase trial participant response to postal questionnaires
43
Use of local champions to contact and recruit potential participants
38
Cost implications of conducting a risk assessment prior to developing a monitoring plan for a multicentre clinical trial
37
Improving trial recruitment using pens as an incentive
36
Training in obtaining informed consent for clinical trials
35
Personalised text message versus standard text message prompts for increasing response to postal questionnaires
34
Offering study results as an incentive to increase response rates to postal questionnaires
33
Effects of a newsletter and Post-it® note on postal questionnaire response rates
32
Effects of a re-designed Participant Information Sheet
31
Electronic prompts to increase response rates to postal questionnaires
30
Use of a leaflet containing information about healthcare research for recruitment to a randomised trial
29
Effect of envelope colour on response rates
28
Pre-notification of trial participants by newsletter to improve response rates
27
Remote versus on-site initiation visits
26
Improving trial recruitment with a leaflet advertising patient and public involvement
25
Two-by-two factorial randomised trial to evaluate strategies to improve follow-up in a randomised prevention trial
24
Using a theoretically informed cover letter to improve response rates to annual postal questionnaires
23
Systematic Techniques for Assisting Recruitment to Trials (MRC START)
22
Promoting Recruitment using Information Management Efficiently (PRIME)
21
Provision of incentives to improve participant response to data collection in a randomised trial of a public health intervention
20
Optimum time and day to send invitation letter for trials
19
Prompting participants to return baseline questionnaires to improve the provision of follow-up information in trials
18
Gifts to improve participation in research
17
Sending a letter or telephoning potential participants as a method of follow-up to improve recruitment to research
16
Providing information on end-of-study compensation to improve participation in research
15
Video presentation of trial information to potential patient participants in a randomized trial
13
Financial incentives to complete follow-up questionnaires in a randomised trial
12
Projected accrual as part of effective site selection for a multi-centre randomised trial
11
Monitoring consent forms by Skype videoconferences
10
Skype videoconferences to improve site engagement in multi-centre randomised trials
9
Pre-randomisation matching of sites in a cluster randomised trial
8
Telephone screening versus face-to-face screening for the identification of participants in a multicentre trial
7
Impact of questionnaire design on response rates and satisfaction of the participants
6
Using a limited number of practitioners to recruit participants to a multicentre randomized trial.
5
Influence of explicit discussion of confidentiality in an invitation letter for a prospective study
4
Description of the study / project in an invitation letter for a prospective study
3
Gender of the person signing an invitation letter for a prospective study
2
Timing and mode of delivery of a self-completion questionnaire
1
Site visits by the principal investigator to improve recruitment in a multicentre randomized trial
