---
title: The Comparative Study Between Bowel Preparation Method
nct_id: NCT01964417
overall_status: COMPLETED
phase: PHASE3
sponsor: Inje University
study_type: INTERVENTIONAL
primary_condition: Colonoscopy
countries: South Korea
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT01964417.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT01964417"
ct_last_update_post_date: 2014-01-13
last_seen_at: "2026-05-12T06:02:25.285Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# The Comparative Study Between Bowel Preparation Method

**Official Title:** The Comparative Study Between Bowel Preparation Method: 4L-split Dose of PEG Solution, Low-volume PEG Plus Ascorbic Acid Focusing on the Bowel Cleansing Efficacy, Patients' Affinity to Preparation Solution and Mucosal Injury

**NCT ID:** [NCT01964417](https://clinicaltrials.gov/study/NCT01964417)

## Key Facts

- **Status:** COMPLETED
- **Phase:** PHASE3
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 319
- **Lead Sponsor:** Inje University
- **Conditions:** Colonoscopy
- **Start Date:** 2013-09
- **Completion Date:** 2014-01
- **CT.gov Last Update:** 2014-01-13

## Brief Summary

The purpose of this study is to compare the efficacy, acceptability and preparation-induced mucosal inflammation of PEG + ascorbic acid vs. PEG for colonoscopy.

## Detailed Description

This was a prospective randomized single-blinded clinical trial of ambulatory patients to assess the efficacy of bowel preparation and preparation-induced mucosal inflammation.

Endoscopists who were blinded to the preparation taken, assessed both bowel cleansing by using the Ottawa bowel preparation assessment tool and preparation-induced mucosal inflammation. Acceptability was assessed by questionnaire.

## Eligibility

- **Minimum age:** 20 Years
- **Maximum age:** 65 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

* Patients who want colonoscopy purposing screening among adults between the age of 20\~65

Exclusion Criteria:

* Under the age of 20, older than 65, pregnant or lactating women, intestinal obstruction, structural intestinal disease, hypothyroidism, gastrointestinal motility, renal failure, congestive heart failure, liver failure, electrolyte abnormalities, who refused research informed consent, inflammatory bowel disease, the obvious symptoms of the disease in patients with lower gastrointestinal (bloody stools, diarrhea, etc.)
```

## Arms

- **4L-split Dose of PEG Solution** (ACTIVE_COMPARATOR) — 4L-split Dose of PEG Solution for bowel preparation
- **Low-volume PEG Plus Ascorbic Acid** (ACTIVE_COMPARATOR) — Low-volume PEG Plus Ascorbic Acid for bowel preparation

## Interventions

- **Colonoscopy after bowel cleansing** (DRUG)

## Primary Outcomes

- **Comparison of colon cleansing between the two solutions using Ottawa scale** _(time frame: 3month)_

## Locations (1)

- Haeundae Paik Hospital, Busan, South Korea

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.haeundae paik hospital|busan||south korea` — added _(2026-05-12)_

---

*Canonical: https://parkinsonspathways.com/agent/trials/NCT01964417.md*  
*Source data (authoritative): https://clinicaltrials.gov/study/NCT01964417*  
*This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*