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Structure of the presentation

Hidden mixed-mode design in catering survey Godenhjelm, Petri 1 , Siikanen, Antti 1 ,Saarni, Kaija, 2 Honkanen, Asmo 2 & Ahvonen, Anssi 2 1,2 Statistics Finland 2 Finnish Game and Fisheries Research Institute Montréal ICES III 2007. Structure of the presentation. Catering sector

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Structure of the presentation

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  1. Hidden mixed-mode design in catering surveyGodenhjelm, Petri 1, Siikanen, Antti1 ,Saarni, Kaija,2Honkanen, Asmo2 & Ahvonen, Anssi21,2 Statistics Finland2 Finnish Game and Fisheries Research InstituteMontréal ICES III 2007 Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  2. Structure of the presentation • Catering sector • Mixed-mode surveys • Design • Material and methods • Results • Discussion Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  3. Catering sector • Catering sector here: meals served outside households, restaurants, personnel canteens, schools, hospitals etc. • Value of daily consumer goods in Finland was in 2005 about 21 mrd. euros • Share of catering sector is 5 mrd. euros • Every third Finn eats daily meals served by catering sector Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  4. Mixed-mode surveys • Mixed mode surveys is used more and more • budgetary reasons • non response reasons • different populations have different communication preferences • data quality reasons • respondent friendly reasons • use of telephone has changed (technological and cultural) • Still not enough is known about implications to survey results • validity and comparability between survey results of different modes • Visual and aural modes • Business surveys might include also some opinion and attitudinal questions in which mode effects are more common Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  5. Design • Paper questionnaire was sent before CATI interviewees gathered data • Paper questionnaire was sent with the contact letter • In the contact letter caterings were asked to get acquainted with the questionnaire and fill it as much as it was possible • But not to send the paper questionnaire because CATI interviewee would take contact to them • It was obvious that not all respondents were filled the questionnaire at the time of CATI contact Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  6. Hidden-mixed mode • There could exist an hidden mixed-mode situation about which researcher might not easily be aware of • In literature called as a concurrent multiple mode system • A screening question was designed to the end of CATI interview : Has a respondent filled the questionnaire beforehand • 1) totally • 2) almost totally • 3) partly • 4) not at all ? Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  7. Mode of answering • The assumption in the screening question: • those who answered “totally” were answering to a paper questionnaire • those who answered “not at all” were answering to a pure telephone interview • Middle categories also gave some interesting knowledge about how respondents react to a survey contact Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  8. Data • Survey population Finnish caterings (14 740) • Stratified sample 2263 • Stratified by amount of served meals in a catering • Response rate 80 % (n=1741) • Telephone interviews by CATI Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  9. The distribution of the screening question • Totally 31 % • Almost totally 23 % • Partly 15 % • Not at all 31 % Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  10. Attitudinal questions : statement type questions about the use of fish and attitudes to fish in catering Questionnaire included also questions about amounts in kilograms and origin The questionnaire was divided into three sections for fish, crayfish, and game (red deer, moose, reindeer) A Chi-Square Tests were done with different questions Contingency tables were analysed Different questions were measured Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  11. Shares of ‘strongly disagree’ responses to the statements on answering mode Significant (p <0.05) differences in 11 out of 12 statements in battery Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  12. Comparability problem • Different modes produce different results • How to control survey design process ? • Should data be adjusted some how ? • Risks to misinterpretation • Mixed-mode experiments clearly show that survey answering is social interaction and communication with different senses (visual vs. aural) Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

  13. Remarks • Human aspects behind survey results play an important role • Knowledge of mixed-mode surveys is crucial in making sensible survey strategies • Effects in attitudinal vs. factual questions • Mixed-mode vs. non response • Unimode or mode-spesific data collection strategy ? Godenhjelm, Siikanen, Saarni, Honkanen & Ahvonen

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