Help Center
Topic: Printing
How to create anonymous linked pre/post surveys
Help Center Printing • Last updated: 26 August, 2025PaperSurvey supports anonymous pre/post surveys that track changes while maintaining respondent privacy. This feature is essential for measuring the impact of interventions, training programs, or treatments.
Understanding pre/post survey requirements
Pre/post surveys need to:
- Link responses from the same person across time points
- Maintain complete anonymity
- Handle varying response rates between pre and post phases
- Support flexible distribution methods
Choose your method based on your needs
We offer four proven methods for implementing pre/post surveys. Select based on your sample size, distribution constraints, and technical requirements.
Method 1: Single survey with unique page marking (recommended)
Best for: Most scenarios where you can control distribution
How it works
- Create one survey containing both pre and post questions
- Enable unique page marking in survey settings
- Print copies and separate pre/post sections into different envelopes
- Distribute pre-survey first, post-survey later
- Upload responses separately - PaperSurvey automatically links matching IDs
Advantages
- Automatic linking with no manual work
- Handles any time gap between pre and post
- Supports batch processing
- Most reliable method
Important note
If you prefer not using unique page marking, scan both pre and post responses in the same PDF file for proper linking.
Method 2: Single survey without unique marking
Best for: Situations where photocopying might be needed
How it works
- Create one survey with both pre and post questions
- Download PDF and manually split into pre-survey.pdf and post-survey.pdf
- Print both parts with matching quantities
- Distribute pre-surveys first
- Ask respondents to keep their pre-survey until post distribution
- Collect and scan both parts together in one file
Advantages
- Allows photocopying if needed
- Simple distribution process
- No special settings required
Limitations
- Requires respondents to retain papers
- Both parts must be scanned together
Method 3: Two surveys with identifier field
Best for: Maximum flexibility or existing ID systems
How it works
- Create separate pre and post surveys
- Add a number field for identifier entry in both
- Generate unique identifiers (e.g., 1001, 1002, 1003...)
- Distribute identifiers to respondents
- Export data separately and merge using identifiers
Advantages
- Works with existing participant ID systems
- Surveys can be completely different
- Flexible timing and distribution
Considerations
- Requires manual data merging
- Participants must remember their identifier
- Risk of transcription errors
Method 4: Two surveys without linking
Best for: When individual tracking isn't required
How it works
- Create separate pre and post surveys
- Distribute and collect independently
- Analyze aggregate changes only
Limitations
- No paired statistical analyses possible
- Cannot track individual progress
- Only suitable for group-level comparisons
Best practices for pre/post surveys
Design considerations
- Keep surveys concise to improve completion rates
- Use identical question wording in both phases
- Include clear instructions about the two-phase process
- Consider adding a "phase identifier" question as backup
Distribution tips
- Educational settings: Distribute through instructors who can ensure proper collection
- Clinical trials: Use sealed envelopes with participant numbers
- Corporate training: Email reminders with clear deadlines
- Community programs: Provide incentives for completing both phases
Common challenges and solutions
Challenge: Low post-survey return rate Solution: Send reminders, emphasize importance, consider incentives
Challenge: Mismatched pre/post responses Solution: Use Method 1 with unique marking for automatic matching
Challenge: Long gap between phases Solution: Methods 1 and 3 handle any time gap effectively
Technical tips
- Test your chosen method with a small pilot group
- Document your process for team members
- Plan for non-responses - typically 20-30% don't complete both phases
- Export data promptly after each phase for backup
Choosing the right method
- Method 1: Choose when you need reliable, automated matching
- Method 2: Select when simplicity and photocopying capability matter
- Method 3: Use when you have existing ID systems or need maximum flexibility
- Method 4: Only when individual tracking truly isn't needed
Most users find Method 1 provides the best balance of reliability and ease of use.
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