Intervention Overview
Phase 1 — Pre-Survey (n = 25)
10-item UPF knowledge quiz · dietary habits · self-efficacy & confidence baseline · demographics
Phase 2 — Intervention Materials
NutriGators website · 7 videos (5 animated + cooking demo + food pantry guide) · 9 handouts · 14-slide presentation deck
Phase 3 — Post-Survey (n = 6)
Repeat knowledge quiz & habits · workshop evaluation · behavior change intentions · planned food swaps
Recruitment
Campus flyers · r/SFSU Reddit post · $20 Starbucks gift card incentive · Pickup at Cesar Chavez Student Center
Key Findings
Self-Rated Knowledge
2.7 → 4.2
+56% increase (out of 5)
Most significant finding
Cooking Confidence
+22%
3.62 → 4.40 out of 5
Largest objective gain
Motivation to Improve
+11%
3.60 → 4.00 out of 5
Post-intervention
Pre-Survey Demographics (n = 25)
UPF Consumption — Pre-Survey Baseline
UPF Consumption Frequency
% of Daily Meals that are Processed
Knowledge Quiz — Pre vs. Post (10 items)
Overall Score
−0.14 pts
6.6/10
Pre-survey mean
(n = 25)
→
6.5/10
Post-survey mean
(n = 6)
No significant change — baseline was already moderate (66.4%). Small post-survey n limits detectability.
Per-Question Accuracy (%)
Self-Efficacy & Confidence — Pre vs. Post (1–5 scale)
Self-Efficacy (D1) — Beliefs
Pre-survey
Post-survey
Confidence (D2) — Skills
Pre-survey
Post-survey
Workshop Evaluation (n = 6 post-survey)
Behavior Change Intentions (1–5)
Self-Rated Knowledge: Before vs. After Workshop
Overall rating
4.2 / 5 ⭐
Would recommend
100% ✓
Most useful element
Handout — UPF dangers (2)
Videos (2)
Recipe handout (1)
Label exercise (1)
Planned Whole-Food Swaps
When asked to name one specific whole-food swap they planned to make, all participants named a specific processed food to eliminate:
- ▶ Takis / hot chips → whole-food snacks
- ▶ Chips → fruits
- ▶ Cheap instant ramen → less processed ramen alternatives
- ▶ Adding almond butter as a daily snack
- ▶ General chip elimination from diet
Limitations
Recruitment resistance & 24% post-survey completion (6/25)
Part 1 needs assessment collected 52 responses in under one week. Part 2 faced active pushback during flyer distribution — the multi-step ask (pre-survey + materials + post-survey) during finals season dramatically raised the participation barrier.
Small n limits statistical conclusions
n = 6 post-survey is too small for statistical significance. Results are directional only and cannot be generalized to the broader SFSU population.
No knowledge quiz change detected
Pre-survey scores were already moderate (6.6/10). Ceiling effects and small n make quiz-based change hard to detect with this sample.
📚 Compared to literature: SCT-based programs in similar college settings show gains of 10–20% with n ≥ 30. Our directional gains in confidence (+0.37–0.41), motivation (+0.40), and self-rated knowledge (+56%) are consistent with the literature — but a larger sample and an earlier semester launch are needed to confirm behavioral change.
Suggestions for Future Iterations
📅 Launch in weeks 6–8
Avoid finals-season attrition. Earlier launch gives more follow-up time.
📢 Use Canvas announcements
Higher SFSU reach than physical flyers or Reddit posts.
🔔 Add automated reminders
Qualtrics follow-up emails to boost post-survey completion.
🎉 Add a social component
In-person cooking event with free food to drive participation.