scholarly journals The iHealth-T2D study: Statistical analysis plan for a cluster randomised controlled trial with intensive family-based lifestyle modification programme to reduce type 2 diabetes risk amongst South Asians

2020 ◽  
Author(s):  
Mirthe Muilwijk ◽  
Marie Loh ◽  
Sara Mahmood ◽  
Saranya Palaniswamy ◽  
Samreen Siddiqui ◽  
...  
Keyword(s):  
Lifestyle Modification ◽  
South Asians ◽  
Controlled Trial ◽  
Cluster Randomised Controlled Trial ◽  
Statistical Analysis Plan ◽  
Link Type ◽  
Family Based ◽  
Randomised Controlled

AbstractBackgroundSouth Asians are at high risk of type 2 diabetes (T2D). Lifestyle modification is effective at preventing T2D amongst South Asians, but the approaches to screening and intervention are limited by high-costs, poor scalability and thus low impact on T2D burden. An intensive family-based lifestyle modification programme for prevention of T2D was developed. The aim of the iHealth-T2D trial is to compare the effectiveness of this programme with usual care.MethodsThe iHealth-T2D trial is designed as a cluster randomised controlled trial (RCT) conducted at 120 locations across India, Pakistan, Sri Lanka and the UK. A total of 3,682 South Asian men and women with age between 40-70 years without T2D but at elevated risk for T2D [defined by central obesity (waist circumference ≥95cm in Sri Lanka, or ≥100cm in India, Pakistan and UK) and/or prediabetes (HbA1c ≥6.0%)] were included in the trial. Here we describe in detail the statistical analysis plan (SAP), which was finalised before outcomes were available to the investigators. The primary outcome will be evaluated after three years of follow-up after enrolment to the study, and is defined as T2D incidence in the intervention arm compared to usual care. Secondary outcomes are evaluated both after one and three years of follow-up and include biochemical measurements, anthropometric measurements, behavioural components and treatment compliance.DiscussionThe iHealth-T2D trial will provide evidence whether an intensive family-based lifestyle modification programme in South Asians who are at high risk for T2D is effective in the prevention of T2D. The data from the trial will be analysed according to this pre-specified SAP.Ethics and disseminationThe trial was approved by the international review board of each participating study site. Study findings will be disseminated through peer-reviewed publications and in conference presentations.Trial registrationEudraCT 2016-001350-18. Registered 14 April 2016 https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/ihealth-t2d/; ClinicalTrials.govNCT02949739. Registered 31 October 2016, https://clinicaltrials.gov/ct2/show/NCT02949739, First posted 31/10/2016.

scholarly journals Targeted and tailored pharmacist-led intervention to improve adherence to antihypertensive drugs among patients with type 2 diabetes in Indonesia: study protocol of a cluster randomised controlled trial

BMJ Open ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. e034507 ◽  
Author(s):  
Sofa D Alfian ◽  
Rizky Abdulah ◽  
Petra Denig ◽  
Job F M van Boven ◽  
Eelko Hak
Keyword(s):  
Type 2 Diabetes ◽  
Randomised Controlled Trial ◽  
Antihypertensive Drugs ◽  
Controlled Trial ◽  
Cluster Randomised Controlled Trial ◽  
Intervention Programme ◽  
Cluster Randomised ◽  
Randomised Controlled

IntroductionCurrent intervention programme to improve drug adherence are either too complex or expensive for implementation and scale-up in low-middle-income countries. The aim of this study is to assess the process and effects of implementing a low-cost, targeted and tailored pharmacist intervention among patients with type 2 diabetes who are non-adherent to antihypertensive drugs in a real-world primary care Indonesian setting.Methods and analysisA cluster randomised controlled trial with a 3-month follow-up will be conducted in 10 community health centres (CHCs) in Indonesia. Type 2 diabetes patients aged 18 years and older who reported non-adherence to antihypertensive drugs according to the Medication Adherence Report Scale (MARS) are eligible to participate. Patients in CHCs randomised to the intervention group will receive a tailored intervention based on their personal adherence barriers. Interventions may include reminders, habit-based strategies, family support, counselling to educate and motivate patients, and strategies to address other drug-related problems. Interventions will be provided at baseline and at a 1-month follow-up. Simple question-based flowcharts and an innovative adherence intervention wheel are provided to support the pharmacy staff. Patients in CHCs randomised to the control group will receive usual care based on the Indonesian guideline. The primary outcome is the between-group difference in medication adherence change from baseline to 3-month follow-up assessed by MARS. Secondary outcomes include changes in patients’ blood pressure, their medication beliefs assessed by the Beliefs about Medicines Questionnaire (BMQ)-specific, as well as process characteristics of the intervention programme from a pharmacist and patient perspective.Ethics and disseminationEthical approval was obtained from the Ethical Committee of Universitas Padjadjaran, Indonesia (No. 859/UN6.KEP/EC/2019) and all patients will provide written informed consent prior to participation. The findings of the study will be disseminated through international conferences, one or more peer-reviewed journals and reports to key stakeholders.Trial registration numberNCT04023734.

scholarly journals The iHealth-T2D study, prevention of type 2 diabetes amongst South Asians with central obesity and prediabetes: study protocol for a randomised controlled trial

Trials ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Anuradhani Kasturiratne ◽  
Khadija I. Khawaja ◽  
Sajjad Ahmad ◽  
Samreen Siddiqui ◽  
Khurram Shahzad ◽  
...  
Keyword(s):  
Physical Activity ◽  
Waist Circumference ◽  
Usual Care ◽  
Community Health ◽  
Central Obesity ◽  
Lifestyle Modification ◽  
South Asians ◽  
Link Type

Abstract Background People from South Asia are at increased risk of type 2 diabetes (T2D). There is an urgent need to develop approaches for the prevention of T2D in South Asians that are cost-effective, generalisable and scalable across settings. Hypothesis Compared to usual care, the risk of T2D can be reduced amongst South Asians with central obesity or raised HbA1c, through a 12-month lifestyle modification programme delivered by community health workers. Design Cluster randomised clinical trial (1:1 allocation to intervention or usual care), carried out in India, Pakistan, Sri Lanka and the UK, with 30 sites per country (120 sites total). Target recruitment 3600 (30 participants per site) with annual follow-up for 3 years. Entry criteria South Asian, men or women, age 40–70 years with (i) central obesity (waist circumference ≥ 100 cm in India and Pakistan; ≥90 cm in Sri Lanka) and/or (ii) prediabetes (HbA1c 6.0–6.4% inclusive). Exclusion criteria: known type 1 or 2 diabetes, normal or underweight (body mass index < 22 kg/m2); pregnant or planning pregnancy; unstable residence or planning to leave the area; and serious illness. Endpoints The primary endpoint is new-onset T2D at 3 years, defined as (i) HbA1c ≥ 6.5% or (ii) physician diagnosis and on treatment for T2D. Secondary endpoints at 1 and 3 years are the following: (i) physical measures: waist circumference, weight and blood pressure; (ii) lifestyle measures: smoking status, alcohol intake, physical activity and dietary intake; (iii) biochemical measures: fasting glucose, insulin and lipids (total and HDL cholesterol, triglycerides); and (iv) treatment compliance. Intervention Lifestyle intervention (60 sites) or usual care (60 sites). Lifestyle intervention was delivered by a trained community health worker over 12 months (5 one-one sessions, 4 group sessions, 13 telephone sessions) with the goal of the participants achieving a 7% reduction in body mass index and a 10-cm reduction in waist circumference through (i) improved diet and (ii) increased physical activity. Usual care comprised a single 30-min session of lifestyle modification advice from the community health worker. Results We screened 33,212 people for inclusion into the study. We identified 10,930 people who met study entry criteria, amongst whom 3682 agreed to take part in the intervention. Study participants are 49.2% female and aged 52.8 (SD 8.2) years. Clinical characteristics are well balanced between intervention and usual care sites. More than 90% of follow-up visits are scheduled to be complete in December 2020. Based on the follow-up to end 2019, the observed incidence of T2D in the study population is in line with expectations (6.1% per annum). Conclusion The iHealth-T2D study will advance understanding of strategies for the prevention of diabetes amongst South Asians, use approaches for screening and intervention that are adapted for low-resource settings. Our study will thus inform the implementation of strategies for improving the health and well-being of this major global ethnic group. IRB approval 16/WM/0171 Trial registration EudraCT 2016-001350-18. Registered on 14 April 2016. ClinicalTrials.govNCT02949739. Registered on 31 October 2016, First posted on 31/10/2016.

scholarly journals The iHealth-T2D study: rationale and design of a cluster randomised trial for prevention of Type 2 Diabetes amongst South Asians with central obesity and prediabetes

2020 ◽  
Author(s):  
Anuradhani Kasturiratne ◽  
Khadija I Khawaja ◽  
Sajjad Ahmad ◽  
Samreen Siddiqui ◽  
Khurram Shahzad ◽  
...  
Keyword(s):  
Waist Circumference ◽  
Usual Care ◽  
Community Health ◽  
Central Obesity ◽  
Lifestyle Modification ◽  
South Asians ◽  
Research Application ◽  
Link Type

AbstractBackgroundPeople from South Asia are at increased risk of type 2 diabetes (T2D). There is an urgent need to develop approaches for prevention of T2D in South Asians, that are cost-effective, generalisable and scalable across settings.HypothesisCompared to usual care, risk of T2D can be reduced amongst South Asians with central obesity or raised HbA1c, through a 12 month lifestyle modification programme delivered by community health workers.DesignCluster randomised clinical trial (1:1 allocation to Intervention or Usual care), carried out in India, Pakistan, Sri Lanka, and UK, with 30 sites per country (120 sites total). Target recruitment 3,600 (30 participants per site) with annual follow-up for three years.Entry criteriaSouth Asian, men or women, age 40-70 years with i. Central obesity (waist circumference ≥100cm in India and Pakistan; ≥90cm in Sri Lanka) and / or ii. Prediabetes (HbA1c 6.0-6.4% inclusive). Exclusion criteria: known type 1 or 2 diabetes, normal or underweight (body mass index<22kg/m2); pregnant or planning pregnancy; unstable residence or planning to leave the area; serious illness.EndpointsThe primary end point is new onset T2D at 3 years, defined as: i. HbA1c≥6.5% or ii. Physician diagnosis and on treatment for T2D. Secondary endpoints at 1 and 3 years are: i. Physical measures: waist circumference, weight and blood pressure; ii. Lifestyle measures: smoking status, alcohol intake, physical activity, dietary intake; iii. Biochemical measures: Fasting glucose, insulin and lipids (total and HDL cholesterol, triglycerides); and iv. Treatment compliance.InterventionLifestyle intervention (60 sites) or Usual care (60 sites). Lifestyle intervention was delivered by a trained community health worker over 12 months (5 one-one session, 4 group sessions, 13 telephone sessions) with the goal of the participants achieving e a 7% reduction in body mass index and a 10 cm reduction in waist circumference through i. improved diet and ii. increased physical activity. Usual care comprised a single 30 minute session of lifestyle modification advice from the community health worker.ResultsWe screened 33,212 people for inclusion into the study. We identified 10,930 people who met study entry criteria, amongst whom, 3,682 agreed to take part in the intervention. Study participants are 49.2% female and aged 52.8 (SD 8.2) years. Clinical characteristics are well balanced between Intervention and Usual care sites. More than 90% of follow-up visits are scheduled to be complete December 2020. Based on follow-up to end 2019, the observed incidence of T2D in the study population is in line with expectations (6.1% per annum).ConclusionThe iHealth-T2D study will advance understanding of strategies for prevention of diabetes amongst South Asians, use approaches for screening and intervention that are adapted for low-resource settings. Our study will thus inform the implementation of strategies for improving the health and well-being of this major global ethnic group.IRB approval16/WM/0171Trial registrationEudraCT 2016-001350-18. Registered 14 April 2016 https://www.hra.nhs.uk/planning-and-improving-research/application-summaries/research-summaries/ihealth-t2d/ ; ClinicalTrials.gov NCT02949739. Registered 31 October 2016, https://clinicaltrials.gov/ct2/show/NCT02949739, First posted 31/10/2016.FunderEuropean Commission (award 643774) and National Institute for Health Research (award 16/136/68)

scholarly journals Effects of a lifestyle intervention programme after 1 year of follow-up among South Asians at high risk of type 2 diabetes: a cluster randomised controlled trial

2021 ◽  
Vol 6 (11) ◽  
pp. e006479
Author(s):  
Mirthe Muilwijk ◽  
Marie Loh ◽  
Samreen Siddiqui ◽  
Sara Mahmood ◽  
Saranya Palaniswamy ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Waist Circumference ◽  
Lifestyle Intervention ◽  
South Asians ◽  
Controlled Trial ◽  
Intervention Group ◽  
Cluster Randomised Controlled Trial ◽  
Control Group ◽  
Family Based ◽  
Randomised Controlled

IntroductionSouth Asians are at high risk of type 2 diabetes (T2D). We assessed whether intensive family-based lifestyle intervention leads to significant weight loss, improved glycaemia and blood pressure in adults at elevated risk for T2D.MethodsThis cluster randomised controlled trial (iHealth-T2D) was conducted at 120 locations across India, Pakistan, Sri Lanka and the UK. We included 3684 South Asian men and women, aged 40–70 years, without T2D but with raised haemoglobin A1c (HbA1c) and/or waist circumference. Participants were randomly allocated either to the family-based lifestyle intervention or control group by location clusters. Participants in the intervention received 9 visits and 13 telephone contacts by community health workers over 1-year period, and the control group received usual care. Reductions in weight (aim >7% reduction), waist circumference (aim ≥5 cm reduction), blood pressure and HbA1C at 12 months of follow-up were assessed. Our linear mixed-effects regression analysis was based on intention-to-treat principle and adjusted for age, sex and baseline values.ResultsThere were 1846 participants in the control and 1838 in the intervention group. Between baseline and 12 months, mean weight of participants in the intervention group reduced by 1.8 kg compared with 0.4 kg in the control group (adjusted mean difference −1.10 kg (95% CI −1.70 to −1.06), p<0.001). The adjusted mean difference for waist circumference was −1.9 cm (95% CI −2.5; to 1.3), p<0.001). No overall difference was observed for blood pressure or HbA1c. People who attended multiple intervention sessions had a dose-dependent effect on waist circumference, blood pressure and HbA1c, but not on weight.ConclusionAn intensive family-based lifestyle intervention adopting low-resource strategies led to effective reduction in weight and waist circumference at 12 months, which has potential long-term benefits for preventing T2D. A higher number of attended sessions increased the effect on waist circumference, blood pressure and HbA1c.Trial registration numberEudraCT: 2016-001350-18; ClinicalTrials.gov: NCT02949739.

scholarly journals Effectiveness of a Peer Support Programme versus Usual Care in Disease Management of Diabetes Mellitus Type 2 regarding Improvement of Metabolic Control: A Cluster-Randomised Controlled Trial

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Tim Johansson ◽  
Sophie Keller ◽  
Henrike Winkler ◽  
Thomas Ostermann ◽  
Raimund Weitgasser ◽  
...  
Keyword(s):  
Peer Support ◽  
Controlled Trial ◽  
Cluster Randomised Controlled Trial ◽  
Secondary Outcome ◽  
Support Intervention ◽  
Cluster Randomised ◽  
Randomised Controlled ◽  
Peer Support Intervention

Aim. Testing the effectiveness of peer support additionally to a disease management programme (DMP) for type 2 diabetes patients.Methods. Unblinded cluster-randomised controlled trial (RCT) involving 49 general practices, province of Salzburg, Austria. All patients enrolled in the DMP were eligible,n=337participated (intervention: 148 in 19 clusters; control: 189 in 20 clusters). The peer support intervention ran over 24 months and consisted of peer supporter recruitment and training, and group meetings weekly for physical exercise and monthly for discussion of diabetes related topics.Results. At two-year follow-up, adjusted analysis revealed a nonsignificant difference inHbA1cchange of 0.14% (21.97 mmol/mol) in favour of the intervention (95% CI −0.08 to 0.36%,p=0.22). Baseline values were 7.02 ± 1.25% in the intervention and 7.08 ± 1.25 in the control group. None of the secondary outcome measures showed significant differences except for improved quality of life (EQ-5D-VAS) in controls (4.3 points on a scale of 100; 95% CI 0.08 to 8.53,p=0.046) compared to the intervention group.Conclusion. Our peer support intervention as an additional DMP component showed no significant effect onHbA1cand secondary outcome measures. Further RTCs with a longer follow-up are needed to reveal whether peer support will have clinically relevant effects.Trial Registration. This trial has been registered with Current Controlled Trials Ltd. (ISRCTN10291077).

scholarly journals An external pilot cluster randomised controlled trial of a theory-based intervention to improve appropriate polypharmacy in older people in primary care (PolyPrime): study protocol

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Audrey Rankin ◽  
◽  
Cathal A. Cadogan ◽  
Heather E. Barry ◽  
Evie Gardner ◽  
...  
Keyword(s):  
Primary Care ◽  
Randomised Controlled Trial ◽  
Older People ◽  
Usual Care ◽  
Controlled Trial ◽  
Cluster Randomised Controlled Trial ◽  
Online Video ◽  
Link Type ◽  
Cluster Randomised ◽  
Randomised Controlled

Abstract Background The use of multiple medications (polypharmacy) is a concern in older people (≥65 years) and is associated with negative health outcomes. For older populations with multimorbidity, polypharmacy is the reality and the key challenge is ensuring appropriate polypharmacy (as opposed to inappropriate polypharmacy). This external pilot cluster randomised controlled trial (cRCT) aims to further test a theory-based intervention to improve appropriate polypharmacy in older people in primary care in two jurisdictions, Northern Ireland (NI) and the Republic of Ireland (ROI). Methods Twelve GP practices across NI (n=6) and the six counties in the ROI that border NI will be randomised to either the intervention or usual care group. Members of the research team have developed an intervention to improve appropriate polypharmacy in older people in primary care using the Theoretical Domains Framework of behaviour change. The intervention consists of two components: (1) an online video which demonstrates how a GP may prescribe appropriate polypharmacy during a consultation with an older patient and (2) a patient recall process, whereby patients are invited to scheduled medication review consultations with GPs. Ten older patients receiving polypharmacy (≥4 medications) will be recruited per GP practice (n=120). GP practices allocated to the intervention arm will be asked to watch the online video and schedule medication reviews with patients on two occasions; an initial and a 6-month follow-up appointment. GP practices allocated to the control arm will continue to provide usual care to patients. The study will assess the feasibility of recruitment, retention and study procedures including collecting data on medication appropriateness (from GP records), quality of life and health service use (i.e. hospitalisations). An embedded process evaluation will assess intervention fidelity (i.e. was the intervention delivered as intended), acceptability of the intervention and potential mechanisms of action. Discussion This pilot cRCT will provide evidence of the feasibility of a range of study parameters such as recruitment and retention, data collection procedures and the acceptability of the intervention. Pre-specified progression criteria will also be used to determine whether or not to proceed to a definitive cRCT. Trial registration ISRCTN, ISRCTN41009897. Registered 19 November 2019. ClinicalTrials.gov, NCT04181879. Registered 02 December 2019.

scholarly journals Optimising medication management in children and young people with ADHD using a computerised test (QbTest): a feasibility randomised controlled trial

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Laura Williams ◽  
Charlotte L. Hall ◽  
Sue Brown ◽  
Boliang Guo ◽  
Marilyn James ◽  
...  
Keyword(s):  
Randomised Controlled Trial ◽  
Young People ◽  
Controlled Trial ◽  
Medication Management ◽  
Control Group ◽  
Global Functioning ◽  
Children And Young People ◽  
Link Type ◽  
Randomised Controlled

Abstract Background Medication for attention deficit hyperactivity disorder (ADHD) should be closely monitored to ensure optimisation. There is growing interest in using computerised assessments of ADHD symptoms to support medication monitoring. The aim of this study was to assess the feasibility and acceptability of a randomised controlled trial (RCT) to evaluate the efficacy of one such computerised assessment, the Quantified Behavior (Qb) Test, as part of medication management for ADHD. Methods This feasibility multi-site RCT conducted in child and adolescent mental health and community paediatric settings recruited participants aged 6–15 years diagnosed with ADHD starting stimulant medication. Participants were randomised into one of two arms: experimental (QbTest protocol) where participants completed a QbTest at baseline and two follow-up QbTests on medication (2–4 weeks and 8–10 weeks later) and control where participants received treatment as usual, including at least two follow-up consultations. Measures of parent, teacher, and clinician-rated symptoms and global functioning were completed at each time point. Clinicians recorded treatment decision-making and health economic measures were obtained. Data were analysed using multi-level modelling and participants (children and parents) and clinicians were interviewed about their experiences, resulting data were thematically analysed. Results Forty-four children and young people were randomised. Completion of study outcome measures by care-givers and teachers ranged from 52 to 78% at baseline to 47–65% at follow-up. Participants reported the questionnaires to be useful to complete. SNAP-IV inattention scores showed greater reduction in the intervention than the control group (− 5.85, 95% CI − 10.33, − 1.36,). Engagement with the intervention ranged from 100% at baseline, to 78% follow-up 1 and 57% follow-up 2. However, only 37% of QbTests were conducted in the correct time period. Interview data highlighted that the objectivity of the QbTest was appreciated by clinicians and parents. Clinicians commented that the additional time and resources required meant that it is not feasible to use QbTest for all cases. Conclusion The trial design and protocol appear to be feasible and acceptable but could be improved by modifying QbTest time periods and the method of data collection. With these changes, the protocol may be appropriate for a full trial. Adding QbTest may improve symptom outcome as measured by SNAP-IV. Trial registration ClinicalTrials.gov, NCT03368573, prospectively registered, 11th December 2017, and ISRCTN, ISRCTN69461593, retrospectively registered, 10th April 2018

scholarly journals Effect of faecal calprotectin testing on referrals for children with chronic gastrointestinal symptoms in primary care: study protocol for a cluster randomised controlled trial

BMJ Open ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. e045444
Author(s):  
Sophie Ansems ◽  
Marjolein Berger ◽  
Patrick van Rheenen ◽  
Karin Vermeulen ◽  
Gina Beugel ◽  
...  
Keyword(s):  
Primary Care ◽  
Randomised Controlled Trial ◽  
Controlled Trial ◽  
Gastrointestinal Symptoms ◽  
Cluster Randomised Controlled Trial ◽  
Referral Rate ◽  
Faecal Calprotectin ◽  
Cluster Randomised ◽  
Randomised Controlled

IntroductionChildren with chronic gastrointestinal symptoms are frequently seen in primary care, yet general practitioners (GPs) often experience challenges distinguishing functional gastrointestinal disorders (FGID) from organic disorders. We, therefore, aim to evaluate whether a test strategy that includes point-of-care testing (POCT) for faecal calprotectin (FCal) can reduce the referral rate to paediatric specialist care among children with chronic gastrointestinal symptoms. The study findings will contribute to improving the recommendations on FCal use among children in primary care.Methods and analysisIn this pragmatic cluster randomised controlled trial, we will randomise general practices into intervention and control groups. The intervention group will use FCal-POCT when indicated, after completing online training about its indication, interpretation and follow-up as well as communicating an FGID diagnosis. The control group will test and treat according to Dutch GP guidelines, which advise against FCal testing in children. GPs will include children aged 4–18 years presenting to primary care with chronic diarrhoea and/or recurrent abdominal pain. The primary outcome will be the referral rate for children with chronic gastrointestinal symptoms within 6 months after the initial assessment. Secondary outcomes will be evaluated by questionnaires completed at baseline and at 3- and 6-month follow-up. These outcomes will include parental satisfaction and concerns, gastrointestinal symptoms, impact of symptoms on daily function, quality of life, proportion of children with paediatrician-diagnosed FGID referred to secondary care, health service use and healthcare costs. A sample size calculation indicates that we need to recruit 158 GP practices to recruit 406 children.Ethics and disseminationThe Medical Research Ethics Committee (MREC) of the University Medical Center Groningen (The Netherlands) approved this study (MREC number: 201900309). The study results will be made available to patients, GPs, paediatricians and laboratories via peer-reviewed publications and in presentations at (inter)national conferences.Trial registration numberThe Netherlands Trial Register: NL7690 (Pre-results)

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