sas A00-280 Exam Questions

Questions for the A00-280 were updated on : Nov 21 ,2025

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Question 1

Given the following SAS program:

Which statement correctly identifies invalid values in the variable TRT, if only the values 'A', B', 'C are
valid?

  • A. if indexc(TRT, 'ABC') eq 0 then output;
  • B. if index(TRT, 'ABC') eq 0 then output;
  • C. if find(TRT, 'ABC') eq 0 then output;
  • D. if indexw(TRT, 'ABC') eq 0 then output;
Answer:

A

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Question 2

A Statistical Analysis Plan describes a clinical trial as "A 12 week, double-blind, placebo-controlled,
randomized, multi-center study." Double-blind refers to which groups in this study?

  • A. treatment and control group
  • B. investigator and subjects
  • C. statistician and sponsor
  • D. sponsor and investigator
Answer:

B

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Question 3

A patient received at least one dose of study medication prior to withdrawing from a study. Which
analysis population would always include this patient?

  • A. efficacy
  • B. intent to treat
  • C. per protocol
  • D. safety
Answer:

D

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Question 4

What is an international ethical and scientific quality standard for designing, conducting, recording
and reporting trials that involve the participation of human subjects?

  • A. 21 CFR Part 11
  • B. Good Clinical Practices
  • C. MedDRA
  • D. WHODrug
Answer:

B

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Question 5

What is the main focus of 21 CFR Part 11?

  • A. electronic submission requirements
  • B. trial safety requirements
  • C. statistical calculation requirements
  • D. trial protocol requirements
Answer:

A

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Question 6

An action plan that describes what will be done in a drug study, how it will be conducted, and why
each part of the study is necessary is called:

  • A. a clinical trial plan
  • B. a protocol
  • C. a data management plan
  • D. a statistical analysis plan
Answer:

B

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Question 7

From the Statistical Analysis Plan, patients age is calculated as an integer relative to date randomized
divided by 365.25. Given the following annotated CRF:

Which programming code defines the patient's age?

  • A. age = int((birthdt-randdt)/365.25);
  • B. age = int((randdt-birthdt)/365.25);
  • C. age= int(yrdif(birthdt,randdt, "act/365.25" ));
  • D. age = int((today()-birthdt)/365.25);
Answer:

B

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Question 8

A Statistical Analysis Plan (SAP) defines the selection process for baseline records. This instructs the
programmer to choose the last non-missing analyte value prior to first study drug administration
(date/time).
The DEMO data set contains the date/time of first study drug administration for subject:

What will be the resulting baseline values, as selected per the SAP instructions?

  • A. Option A
  • B. Option B
  • C. Option C
  • D. Option D
Answer:

D

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Question 9

Which statement correctly describes an aspect of a Phase II clinical trial?

  • A. randomized controlled multicenter trials on large patient groups
  • B. designed to assess the pharmacovigilance, pharmacokinetics, and pharmacodynamics of a drug
  • C. in vitro and in vivo experiments using wide-ranging doses of the drug
  • D. designed to assess how well the drug works
Answer:

D

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Question 10

CORRECT TEXT
Which CDISC filename contains the following items?
• Variable attributes
• Controlled terminology
• Computational methods
Enter your answer in the space below (Case is ignored. Do not add leading or trailing spaces to your
answer.).

Answer:

DEFINE.XML,DEFINE.PDF,DEFINE

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Question 11

Where would you store a value collected on a case report form but not defined in an SDTM domain?

  • A. RELREC
  • B. DM
  • C. SUPPQUAL
  • D. SC
Answer:

C

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Question 12

The purpose of the ADaM model is to provide a framework that:

  • A. enables the tabulation of the raw source data
  • B. enables the creation of study patient profiles
  • C. enables the statistical analysis of the data
  • D. can be used to generate the CDISC ODM
Answer:

C

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Question 13

Given the following data set:

Which type of clinical trials data is this?

  • A. Laboratory
  • B. Baseline
  • C. Medical History
  • D. Vital Signs
Answer:

A

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Question 14

Which CDISC standard is concerned with the development of simplified case report forms?

  • A. Clinical Data Acquisition Standards Harmonization (CDASH)
  • B. Operational Data Model (ODM)
  • C. Study Data Tabulation Model (SDTM)
  • D. Trial Design Model (TDM)
Answer:

A

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Question 15

Identify the CDISC model with the following characteristics:
• XML-based content and format standard
• facilitates the archive and interchange of the metadata and data for clinical research
• provides an accurate audit trail that is 21 CRF Part II compliant

  • A. Analysis Data Model (ADaM)
  • B. Operational Data Model (ODM)
  • C. Study Data Tabulation Model (SDTM)
  • D. Trial Design Model (TDM)
Answer:

B

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