CClinicalTrials.gg
Status unknownNCT04898426Updated Aug 16, 2021

Effect of Enhanced Interactive Text Messages and Phone Instruction on the Quality of Bowel Preparation for Colonoscopy.

An interventional study of Enhanced bowel preparation instruction in Colon Polyp and Colon Neoplasm, sponsored by Griffith Base Hospital. Status unknown at 1 site in Australia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-08-16.

Sponsored by Griffith Base Hospital · Not applicable, Interventional, and Other

The sponsor has not verified this record recently (last verified Aug 2021), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
500
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Efficacy Evaluation of Enhanced Bowel Preparation Instructions in Elective Colonoscopy.

Read the detailed description

This is a prospective, randomized, controlled clinical investigation designed to evaluate the efficacy of enhanced bowel preparation instructions (automated SMS, information website, and pre-recorded phone call) in improving bowel preparation quality in elective colonoscopy.

Subjects from the interventional and control group will receive standard of care bowel preparation instruction.

The interventional group will receive enhanced instructions delivered by automated SMS, information website and pre-recorded phone calls in the 48 hours leading up to the colonoscopy day. The intention is to provide a reminder, to reiterate instruction on clear fluid diet and timing of bowel preparation medication, and to provide additional graphical illustration on the information website.

Subjects in the interventional group must reply "OK" to each automated SMS or press "1" on the keypad at the end of the automated phone call to acknowledge understanding and receipt of instruction. Failure to acknowledge trigger an alert for a booking office staff member to directly call the patient and confirm compliance.

The clinical investigation will be conducted at one hospital in the state of New South Wales, Australia.

Subjects will be randomized to the interventional group (enhanced instruction) versus the control group (standard instruction).

The proceduralist assessing outcome measures at the time of colonoscopy is blinded to the intervention.

02

Conditions studied

  • Colon Polyp
  • Colon Neoplasm

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Keywords

  • Colonoscopy
  • Boston bowel preparation scale
  • Bowel preparation quality
  • Enhanced bowel preparation instruction
03

In context

Colonic Neoplasms

1,432 studies on the registry are indexed under Colonic Neoplasms; 357 are open to participants now.

This study's planned enrollment of 500 is above the median of 90 across 1,034 interventional studies indexed under Colonic Neoplasms.

Browse Colonic Neoplasms studies →

Lead sponsor

This is the only study on the registry with Griffith Base Hospital as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Elective colonoscopy booking at Griffith Base Hospital.

Exclusion criteria

Exclusion Criteria:

  • Emergency colonoscopy
  • Patients who are unable to understand bowel preparation instructions in the following languages: English, Italian, Punjabi, Gujarati, Samoan, Mandarin.
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Care provider, Investigator, Outcomes assessor)
Enrollment
500 participants (estimated)

Study arms

  • No intervention
    Standard Bowel Preparation Instruction

    Patients receive the standard-of-care bowel preparation instruction.

  • Experimental
    Enhanced Bowel Preparation Instruction

    Patients receive enhanced instructions (SMS, phone call, info website) in addition to the standard-of-care bowel preparation instruction.

    Other: Enhanced bowel preparation instruction

Interventions

  • OtherEnhanced bowel preparation instruction

    Automated delivery of SMS, pre-recorded phone call, and link to an information website.

06

What researchers measure

Primary outcomes

  1. Bowel preparation quality

    Bowel preparation quality is assessed using the Boston Bowel Preparation Scale (range 0 to 9, with higher scores indicating better bowel preparation quality)

    Time frame: Bowel preparation quality is scored once for each patient at the time of colonoscopy completion. We expect to conduct this score in 500 patients over the study period of approximately 12 months.

Secondary outcomes

  1. Colonoscopy cancellation rate

    The number of colonoscopy being cancelled within 48 hours of the colonoscopy date. The rates will be compared between the study groups.

    Time frame: Colonoscopy cancellation rate will be calculated at the time of study completion, expected to be 12 months.

  2. Caecal intubation rate

    The proportion of colonoscopies in which the colonoscope reaches the furthest extent of the colon. The rates will be compared between the study groups.

    Time frame: Caecal intubation rate will be calculated at the time of study completion, expected to be 12 months.

  3. Polyp detection rate

    The proportion of colonoscopies in which a polyp was detected. The rates will be compared between the study groups.

    Time frame: Polyp detection rate will be calculated at the time of study completion, expected to be 12 months.

07

Study locations

1 of 1 sites recruiting
  • Griffith Base Hospital
    Griffith, New South Wales 2680, Australia
    Recruiting
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References and documents

Publications

  • Rex DK, Imperiale TF, Latinovich DR, Bratcher LL. Impact of bowel preparation on efficiency and cost of colonoscopy. Am J Gastroenterol. 2002 Jul;97(7):1696-700. doi: 10.1111/j.1572-0241.2002.05827.x. PubMed 12135020 ↗
  • Chokshi RV, Hovis CE, Hollander T, Early DS, Wang JS. Prevalence of missed adenomas in patients with inadequate bowel preparation on screening colonoscopy. Gastrointest Endosc. 2012 Jun;75(6):1197-203. doi: 10.1016/j.gie.2012.01.005. Epub 2012 Feb 28. PubMed 22381531 ↗
  • Froehlich F, Wietlisbach V, Gonvers JJ, Burnand B, Vader JP. Impact of colonic cleansing on quality and diagnostic yield of colonoscopy: the European Panel of Appropriateness of Gastrointestinal Endoscopy European multicenter study. Gastrointest Endosc. 2005 Mar;61(3):378-84. doi: 10.1016/s0016-5107(04)02776-2. PubMed 15758907 ↗
  • Harewood GC, Sharma VK, de Garmo P. Impact of colonoscopy preparation quality on detection of suspected colonic neoplasia. Gastrointest Endosc. 2003 Jul;58(1):76-9. doi: 10.1067/mge.2003.294. PubMed 12838225 ↗
  • Guo X, Yang Z, Zhao L, Leung F, Luo H, Kang X, Li X, Jia H, Yang S, Tao Q, Pan Y, Guo X. Enhanced instructions improve the quality of bowel preparation for colonoscopy: a meta-analysis of randomized controlled trials. Gastrointest Endosc. 2017 Jan;85(1):90-97.e6. doi: 10.1016/j.gie.2016.05.012. Epub 2016 May 14. PubMed 27189659 ↗
  • Kang X, Zhao L, Leung F, Luo H, Wang L, Wu J, Guo X, Wang X, Zhang L, Hui N, Tao Q, Jia H, Liu Z, Chen Z, Liu J, Wu K, Fan D, Pan Y, Guo X. Delivery of Instructions via Mobile Social Media App Increases Quality of Bowel Preparation. Clin Gastroenterol Hepatol. 2016 Mar;14(3):429-435.e3. doi: 10.1016/j.cgh.2015.09.038. Epub 2015 Oct 20. PubMed 26492848 ↗
  • Liu X, Luo H, Zhang L, Leung FW, Liu Z, Wang X, Huang R, Hui N, Wu K, Fan D, Pan Y, Guo X. Telephone-based re-education on the day before colonoscopy improves the quality of bowel preparation and the polyp detection rate: a prospective, colonoscopist-blinded, randomised, controlled study. Gut. 2014 Jan;63(1):125-30. doi: 10.1136/gutjnl-2012-304292. Epub 2013 Mar 16. PubMed 23503044 ↗
  • Lee YJ, Kim ES, Choi JH, Lee KI, Park KS, Cho KB, Jang BK, Chung WJ, Hwang JS. Impact of reinforced education by telephone and short message service on the quality of bowel preparation: a randomized controlled study. Endoscopy. 2015 Nov;47(11):1018-27. doi: 10.1055/s-0034-1392406. Epub 2015 Jul 16. PubMed 26182387 ↗
  • Spiegel BM, Talley J, Shekelle P, Agarwal N, Snyder B, Bolus R, Kurzbard N, Chan M, Ho A, Kaneshiro M, Cordasco K, Cohen H. Development and validation of a novel patient educational booklet to enhance colonoscopy preparation. Am J Gastroenterol. 2011 May;106(5):875-83. doi: 10.1038/ajg.2011.75. Epub 2011 Apr 12. PubMed 21483463 ↗
  • Calderwood AH, Lai EJ, Fix OK, Jacobson BC. An endoscopist-blinded, randomized, controlled trial of a simple visual aid to improve bowel preparation for screening colonoscopy. Gastrointest Endosc. 2011 Feb;73(2):307-14. doi: 10.1016/j.gie.2010.10.013. Epub 2010 Dec 18. PubMed 21168840 ↗
  • Janahiraman S, Tay CY, Lee JM, Lim WL, Khiew CH, Ishak I, Onn ZY, Ibrahim MR, Chew CK. Effect of an intensive patient educational programme on the quality of bowel preparation for colonoscopy: a single-blind randomised controlled trial. BMJ Open Gastroenterol. 2020 May;7(1):e000376. doi: 10.1136/bmjgast-2020-000376. PubMed 32371502 ↗
  • Walter B, Frank R, Ludwig L, Dikopoulos N, Mayr M, Neu B, Mayer B, Hann A, Meier B, Caca K, Seufferlein T, Meining A. Smartphone Application to Reinforce Education Increases High-Quality Preparation for Colorectal Cancer Screening Colonoscopies in a Randomized Trial. Clin Gastroenterol Hepatol. 2021 Feb;19(2):331-338.e5. doi: 10.1016/j.cgh.2020.03.051. Epub 2020 Mar 30. Erratum In: Clin Gastroenterol Hepatol. 2022 Jan;20(1):250. doi: 10.1016/j.cgh.2021.10.011. PubMed 32240835 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 16, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04898426
Lead sponsor
Griffith Base Hospital
Responsible party
Dr Minh Pham (Researcher, Griffith Base Hospital) — Principal investigator
First posted
May 24, 2021
Start date
Aug 13, 2021
Primary completion
Feb 2022 (estimated)
Completion
Mar 2022 (estimated)
Last update
Aug 16, 2021

Study contacts

Minh Pham
Contact
minhpham@medgneer.com
+61 2 6969 5555
Kate FitzGerald
Contact
Sheila.Fitzgerald@health.nsw.gov.au
+61 2 6969 5555
Minh Pham
principal investigator · Researcher

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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