OPOlli Paakkari

Olli Paakkari

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Current Organizations / Institutes

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Olli Paakkari has a total of 34 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Psychometric properties of Persian version of health literacy for Iranian school-age children scale

    by Ibrahim Abdollahpour, Maryam Yazdi, Yahya Salimi, Roya Kelishadi, Olli Paakkari

    Health literacy may play an important role in the attainment of the United Nations Sustainable Development Goals. The aim of this study was to assess the psychometric properties of the Persian version of Health Literacy for School-Aged Children (P-HLSAC) employing data that covered the entire school path. This cross-sectional study was conducted in 2023–24 among 605 school-aged students in Isfahan, Iran. Reliability indices as well as content, predictive and concurrent validity were evaluated. The factor structure of P-HLSAC was assessed and confirmed employing exploratory and confirmatory factor analysis, respectively. The scale content validity indices, Cronbach α and intraclass correlation coefficient were acceptable. A significant correlation was found between quality of life and health literacy (Pearson’s r = 0.28, p < 0.001) demonstrating a good predictive validity. The mean of health literacy in those with daily self-health learning behavior was significantly higher than those without it (33.60 vs. 31.9, p < 0.001) highlighting the concurrent validity of P-HLSAC. Confirmatory factor analysis approved both one- and two-factor structure of P-HLSAC. The model indices verified an adequate model fit for both one- and two-factor structure of P-HLSAC. This study confirmed the reliability and validity of the P-HLSAC for estimating health literacy in an Iranian cultural context among primary to upper secondary school students. Considering its briefness, the psychometric characteristics of P-HLSAC were approved for its utilization in large-scale studies among entire school-path Iranian school-age children.


  • Open Access

    The core competencies of a health education teacher

    by Olli Paakkari, Markus Kulmala, Nelli Lyyra, Terhi Saaranen, Pirjo Lindfors, Heli Tyrväinen

    Teachers play a crucial role in students’ learning and in the development of health literacy. Hence, the aim of this study was to identify the core competencies needed for teachers of health education in supporting student learning. A three-round Delphi study was carried out over an 8-week period, through consultation with 25 Finnish experts in health education. An open-ended question was used to identify the core competencies for school health educators. The data were analysed using inductive content analysis. In subsequent rounds, experts were asked to assess the importance of the identified competencies on a 7-point Likert scale, and finally to rank the most important competencies. In total, 52 competencies were identified and categorized into eight core competence domains. Thereafter, 40 competencies were assessed and selected for the third round, in which the experts ranked the 15 most important competencies, encompassing four core domains, i.e. pedagogic and subject-specific didactic, social and emotional, content knowledge and continuous professional development. Other domains of competence identified in the present study were ethical competence, competence in school health promotion, contextual competence and professional well-being competence. The study defines health education teacher core competencies and domains, and the information can be used in teacher education programmes, for developing teaching and for teachers’ self-evaluation.


  • Open Access

    The Brief Health Literacy Scale for Adults: Adaptation and Validation of the Health Literacy for School-Aged Children Questionnaire

    by Stinne Eika Rasmussen, Anna Aaby, Anne Søjbjerg, Anna Mygind, Helle Terkildsen Maindal, Olli Paakkari, Kaj Sparle Christensen

    The Health Literacy for School-Aged Children (HLSAC) is a brief, generic instrument measuring health literacy among school-aged children. Given its brevity and broad conceptualization of health literacy, the HLSAC is a potentially valuable measuring instrument among adults as well. This validation study aimed to adapt the HLSAC questionnaire to an adult population through assessment of content validity and subsequently determine the structural validity of the adapted instrument, the Brief Health Literacy scale for Adults (B-HLA). The content validity of the HLSAC was assessed through interviews with respondents and experts, and the structural validity of the adapted instrument (B-HLA) was evaluated using Rasch analysis. The content validity assessment (n = 25) gave rise to adjustments in the wording of five items. The B-HLA demonstrated an overall misfit to the Rasch model (n = 290). Items 6 and 8 had the poorest individual fits. We found no signs of local dependency or differential item functioning concerning sex, age, education, and native language. The B-HLA demonstrated unidimensionality and ability to discriminate across health literacy levels (PSI = 0.80). Discarding items 6 or 8 resulted in an overall model fit and individual fit of all items. In conclusion, the B-HLA appears to be a valid and reliable instrument for assessing health literacy among adults.


  • Open Access

    Koululaisten terveys ja muuttuvat haasteet 2022: WHO-Koululaistutkimus 40 vuotta

    by Jasmine Gustafsson, Markus Kulmala, Henri Lahti, Nelli Lyyra, Ilona Markkanen, Kwok Ng, Kristiina Ojala, Leena Paakkari, Olli Paakkari, Nina Simonsen, et al.

    WHO-Koululaistutkimus on Suomessa käytetty nimi Health Behaviour in School-aged Children (HBSC) -tutkimukselle, jonka kyselyyn vastasi 11-, 13- ja 15-vuotiaita koululaisia yli 50 maasta aineistokeräyksessä 2021/2022. Ensimmäisen aineistonkeräys oli 40 vuotta sitten vuonna 1983 ja vuonna 2022 aineistoa kerättiin 11. kerran. Suomessa anonyymiin kyselyyn vastaavat koululaiset ovat perusopetuksen 5., 7. ja 9. luokalta. WHO-Koululaistutkimuksen tavoitteena on tuottaa kansainvälisesti vertailukelpoista ja kansallisesti tärkeää tietoa koululaisten terveyskäyttäytymisestä, terveydestä ja hyvinvoinnista sekä niiden taustalla olevista tekijöistä. Lisäksi tavoitteena on lisätä ymmärrystä terveyden eriarvoisuudesta ja arvioida terveyden eriarvoisuuden kehittymistä eri aineistonkeruuvuosien välillä. Tutkimus tuottaa tietoa lasten ja nuorten terveyden edistämisen käytänteiden ja poliittisen päätöksenteon tueksi. Tutkimuksesta vastaa tutkijaryhmä Jyväskylän yliopiston Liikuntatieteellisessä tiedekunnassa toimivasta Terveyden edistämisen tutkimuskeskuksesta. Tutkimusta johtavat apulaisprofessori Leena Paakkari ja yliopistonlehtori Nelli Lyyra. Tässä raportissa esitetään WHO-Koululaistutkimuksen 2022 tuloksia 5-, 7- ja 9-luokkalaisten koululaisten koetusta terveydestä, yksinäisyydestä, mielen hyvinvoinnista, koulukokemuksista, terveystottumuksista sekä terveyttä vaarantavasta käyttäytymisestä ja terveyden voimavaroista. Ajallisia muutoksia tarkastellaan vertaamalla vuoden 2022 tuloksia vuosiin 2014 ja 2018. Raportti sisältää myös suomen- ja ruotsinkielisten nuorten hyvinvoinnin vertailua vuoden 2022 tulosten perusteella. Raportti päättyy terveyden ylläpitämiselle ja edistämiselle tärkeän terveyden lukutaidon tilan sekä sen ja koetun terveyden ja terveyskäyttäytymisen välisten yhteyksien tarkasteluun.


  • Open Access

    The development and cross-national validation of the short health literacy for school-aged children (HLSAC-5) instrument

    by Olli Paakkari, Markus Kulmala, Nelli Lyyra, Minna Torppa, Joanna Mazur, Zuzana Boberova, Leena Paakkari

    Health literacy is an asset for and indicator of adolescents’ health and wellbeing, and should therefore be monitored and addressed across countries. This study aimed to develop and validate a shorter version of the original 10-item health literacy for school-aged children instrument in a cross-national context, using data from the health behaviour in school-aged children 2017/18 survey. The data were obtained from 25 425 adolescents (aged 13 and 15 years) from seven European countries. Determination was made of the best item combination to form a shorter version of the health literacy instrument. Thereafter, the structural validity, reliability, measurement invariance, and criterion validity of the new 5-item instrument were examined. Confirmatory factor analysis showed a good model fit to the data across countries and in the total sample, confirming the structural validity (CFI = 0.995, TLI = 0.989, SRMR = 0.011, RMSEA = 0.031). The internal consistency of the instrument was at a good level across countries (α = 0.87–0.98), indicating that the instrument provided reliable scores. Configural and metric invariance was established across genders, ages, and countries. Scalar invariance was achieved for age and gender groups, but not between countries. This indicated that the factor structure of the scale was similar, but that there were differences between the countries in health literacy levels. Regarding criterion validity, structural equation modelling showed a positive association between health literacy and self-rated health in all the participating countries. The new instrument was found to be valid and reliable for the purposes of measuring health literacy among adolescents in a cross-national context.


  • Open Access

    Health Education Teachers’ Assessment Conceptions and Practices: Identifying Assessment Profiles

    by Olli Paakkari, Leena Paakkari, Henna Haapala, Mirja Hirvensalo

    The study explored the latent construct underlying the assessment conceptions and practices of Finnish Health Education teachers (n = 165) in the context of curricula, seeking thereby to identify the teachers’ assessment profiles. Six underlying factors were found to encompass their assessment conceptions and practices, namely Assessment supporting learning, Assessment of working, Self and peer assessment as part of grading, Common assessment criteria, Questionable assessment practices, and Norm-referenced assessment. Via cluster analysis, three distinct assessment profiles were identified, labeled as Problematic assessors, Learning supportive assessors, and Norm-based assessors. These findings can be used to develop Health Education teacher training and facilitate teachers’ assessment literacy.


  • Open Access

    A Comparative Study on Adolescents’ Health Literacy in Europe: Findings from the HBSC Study

    by Leena Paakkari, Minna Torppa, Joanna Mazur, Zuzana Boberova, Gorden Sudeck, Michal Kalman, Olli Paakkari

    (1) Background: There is a need for studies on population-level health literacy (HL) to identify the current state of HL within and between countries. We report comparative findings from 10 European countries (Austria, Belgium (Fl), Czechia, England, Estonia, Finland, Germany, Macedonia, Poland, and Slovakia) on adolescents’ HL and its associations with gender, family affluence (FAS), and self-rated health (SRH). (2) Methods: Representative data (N = 14,590; age 15) were drawn from the HBSC (Health Behavior in School-Aged Children) study. The associations between HL, gender, FAS, and SRH were examined via path models. (3) Results: The countries exhibited differences in HL means and in the range of scores within countries. Positive associations were found between FAS and HL, and between HL and SRH in each country. Gender was associated with differences in HL in only three countries. HL acted as a mediator between gender and SRH in four countries, and between FAS and SRH in each country. (4) Conclusions: The findings confirm that there are differences in HL levels within and between European countries, and that HL does contribute to differences in SRH. HL should be taken into account when devising evidence-informed policies and interventions to promote the health of adolescents.


  • Subjective health literacy: Development of a brief instrument for school-aged children

    by Olli Paakkari, Minna Torppa, Lasse Kannas, Leena Paakkari

    Aims: The present paper focuses on the measurement of health literacy (HL), which is an important determinant of health and health behaviours. HL starts to develop in childhood and adolescence; hence, there is a need for instruments to monitor HL among younger age groups. These instruments are still rare. The aim of the project reported here was, therefore, to develop a brief, multidimensional, theory-based instrument to measure subjective HL among school-aged children. Methods: The development of the instrument covered four phases: item generation based on a conceptual framework; a pilot study (n = 405); test–retest (n = 117); and construction of the instrument (n = 3853). All the samples were taken from Finnish 7th and 9th graders. Results: Initially, 65 items were generated, of which 32 items were selected for the pilot study. After item reduction, the instrument contained 16 items. The test–retest phase produced estimates of stability. In the final phase a 10-item instrument was constructed, referred to as Health Literacy for School-Aged Children (HLSAC). The instrument exhibited a high Cronbach alpha (0.93), and included two items from each of the five predetermined theoretical components (theoretical knowledge, practical knowledge, critical thinking, self-awareness, citizenship). Conclusions: The iterative and validity-driven development process made it possible to construct a brief multidimensional HLSAC instrument. Such instruments are suitable for large-scale studies, and for use with children and adolescents. Validation will require further testing for use in other countries.