# Screening for Colorectal Cancer in Older Patients (PLCO Screening Trial)

> **NCT01696981** · NA · ACTIVE_NOT_RECRUITING · sponsor: **National Cancer Institute (NCI)** · enrollment: 154900 (actual)

## Conditions studied

- Colon Carcinoma
- Rectal Carcinoma

## Interventions

- **OTHER:** Screening Questionnaire Administration
- **PROCEDURE:** Sigmoidoscopy

## Key facts

- **NCT ID:** NCT01696981
- **Lead sponsor:** National Cancer Institute (NCI)
- **Sponsor class:** NIH
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 1993-11-16
- **Primary completion:** 2012-05-21
- **Final completion:** 2027-06-30
- **Target enrollment:** 154900 (ACTUAL)
- **Last updated:** 2026-04-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01696981

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01696981, "Screening for Colorectal Cancer in Older Patients (PLCO Screening Trial)". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT01696981. Licensed CC0.

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