Kano and factor analysis for a European online fashion

  • Enhanced customer satisfaction

  • Simplified survey data

  • Informed new UX/UI design priorities


CLIENT CHALLENGES

  • A Europe-based online fashion retailer engaged us to analyse multi-source survey data to refine its mobile and desktop platforms and prioritise feature improvements
  • The client had collected over 12,000 survey responses across five European markets (the UK, Germany, France, Spain, Italy), focusing on user satisfaction, buying behaviour and expectations from platform features
  • They sought clarity on which features truly delighted users versus those that were expected by default and also aimed to reduce redundancy in survey dimensions through data simplification

OUR APPROACH

  • Step 1: Data integration and standardisation
    • Harmonised survey data across markets, mapping different scales (e.g., 1-5 satisfaction vs binary satisfaction) to a uniform Likert scale

    • Mapped responses for feature categories such as the following:

      • “One-click checkout”

      • “Real-time inventory updates”

      • “AI-based outfit recommendations”

      • “Mobile-first design”

  • Step 2: Kano analysis
    • Kano model was applied to classify features into the following:

      • Must-haves (basic needs)

      • Performance needs (linear satisfaction)

      • Delighters (unexpected feature satisfaction)

    • Respondents evaluated each feature using both functional (like) and dysfunctional (dislike) forms

  • Step 3: Factor analysis
    • Conducted factor analysis (FA) to group 24 survey questions into latent dimensions

    • Reduced 24 questions to 4 major factors explaining 76% of variance:

      • Convenience factor (checkout, delivery, navigation)

      • Trust factor (data security, return policy clarity)

      • Personalisation factor (recommendations, tailored content)

      • Engagement factor (mobile app features, loyalty programme)

IMPACT DELIVERED

  • Prioritise development efforts on high impact such as improved stock alerts, loyalty programs and AR try-on
  • Roll out segment features based on regional needs, such as enhancing privacy policy transparency in GDPR-sensitive markets
  • Simplify future survey efforts, reducing respondent fatigue while focusing on four key insight-driving dimensions
  • Boost user satisfaction scores by 17% quarter-over-quarter after implementation of the top three features
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