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Psychometric characteristics of the Croatian and the Serbian versions of the oral health impact profile for edentulous subjects, with a pilot study on the dimensionality

Asja Čelebić
Asja Čelebić
, 
Ivica Stančić
Ivica Stančić
, 
Ines Kovačić
Ines Kovačić
, 
Aleksandra Popovac
Aleksandra Popovac
, 
Jolanda Topić
Jolanda Topić
, 
Ketij Mehulić
Ketij Mehulić
, 
Sašo Elenčevski
Sašo Elenčevski
 et 
Sanja Peršić
Sanja Peršić
   | 31 déc. 2020
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Article Category: Research Article
Publié en ligne: 31 déc. 2020
Pages: 55 - 64
Reçu: 25 mai 2020
Accepté: 24 nov. 2020
DOI: https://doi.org/10.2478/sjph-2021-0009
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© 2021 National Institute of Public Health, Slovenia
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Translation of the original English language OHIP-EDENT into the Croatian and Serbian languages.
Translation of the original English language OHIP-EDENT into the Croatian and Serbian languages.

Figure 2

Mean baseline and after-treatment scores of the Croatian and Serbian 19-item Oral Health Impact Profiles (before and after implant-supported overdenture treatment in the mandible).
Mean baseline and after-treatment scores of the Croatian and Serbian 19-item Oral Health Impact Profiles (before and after implant-supported overdenture treatment in the mandible).

Test-retest reliability measured by intraclass correlation coefficients (ICC) for the OHIP-CRO-EDENT and the OHIP-SRB-EDENT); n=number of participants.

Questionnaire ICC 95% confidence interval of the ICC Mean difference 95% confidence interval of the difference P
OHIP-EDENT-CRO
Complete denture wearers (n=30) 0.99 0.98–0.99 -0.37 -1.42–0.69 0.48 NS
OHIP-EDENT-SRB
Complete denture wearers (n=30) 0.97 0.93–0.98 -1.0 -2.01–0.70 0.11 NS

Factor loadings after varimax rotation of the OHIP-EDENT-CRO and the OHIP-EDENT-SRB.

Factor OHIP-EDENT-CRO
 OHIP-EDENT-SRB
Component
 Component
1 2 3 4 1 2 3 4
Difficulty chewing 0.13 0.61 0.41 0.20 0.83
Food catching 0.35 0.61 0.83 0.11
Dentures not fitting 0.13 0.15 0.75 0.52 0.47 -0.15
Painful aching 0.10 0.13 0.81 0.71 0.35
Uncomfortable to eat 0.54 0.47 0.31 0.25 0.71
Sore spots 0.20 0.33 0.72 0.58 0.21
Uncomfortable dentures 0.16 0.28 0.76 0.13 0.19 0.44 0.45
Worried 0.21 0.67 0.33 0.21 0.73 0.15 0.21
Self-conscious 0.72 0.32 0.52 0.64
Avoid eating 0.28 0.50 0.47 0.27 0.41 0.38 0.11 -0.12
Unable to eat 0.23 0.69 0.42 0.29 0.26 0.40 0.52
Interrupt meals 0.38 0.19 0.25 0.70 0.19 0.60 -0.15
Upset 0.41 0.70 0.30 0.19 0.80 0.16
Embarrassed 0.57 0.64 0.19 0.81 -0.13 0.14
Avoid going out 0.79 0.26 0.13 0.76 0.20 0.19 -0.11
Less tolerant 0.76 0.26 0.26 0.22 0.18 -0.76
Irritable with others 0.74 0.23 0.19 0.60 0.40 -0.29
Unable to enjoy company 0.84 0.16 0.80 0.12 0.14 -0.21
Life less satisfying 0.71 0.33 0.21 0.77 0.10 -0.13 0.16

Cronbach’s alpha coefficient, average inter-item correlation, mean and summary scores with standard deviations, and Guttman’s Split-Half Coefficients of the OHIP-EDENT-CRO and the OHIP-EDENT-SRB; n=number of participants.

Questionnaire n Cronbach’s α Average inter-item correlation Mean Summary Score SD (Mean Summary Score) Guttman’s Split-Half Coefficient
OHIP-EDENT-CRO
Participants 95 0.92 0.39 30.21 15.95 0.83
OHIP-EDENT-SRB
Participants 177 0.87 0.25 19.51 7.60 0.74

Mean item scores, standard deviations, corrected item-total correlations, Cronbach’s alpha coefficients when the item was deleted, and factor loadings of the OHIP-EDENT-CRO and the OHIP-EDENT-SRB; SD=standard deviation.

Questionnaire OHIP-EDENT-CRO
 OHIP-EDENT-SRB
Mean SD Corrected item–Total correlation Cronbach’s alpha if item deleted Factor loadings Mean SD Corrected item–Total correlation Cronbach’s alpha if item deleted Factor loadings
Difficulty chewing 2.60 1.24 0.57 0.92 0.56 1.17 0.65 0.50 0.84 0.75
Food catching 1.84 1.24 0.49 0.92 0.50 0.92 0.63 0.23 0.87 0.70
Dentures not fitting 2.43 1.46 0.48 0.92 0.60 0.55 0.64 0.28 0.87 0.52
Painful aching .99 1.12 0.45 0.92 0.69 0.44 0.58 0.37 0.86 0.63
Uncomfortable to eat 2.32 1.39 0.64 0.92 0.61 1.25 0.55 0.46 0.86 0.56
Sore spots 1.67 1.22 0.56 0.92 0.68 0.64 0.57 0.24 0.87 0.40
Uncomfortable dentures 2.16 1.45 0.63 0.92 0.69 0.71 0.62 0.42 0.86 0.44
Worried 2.03 1.50 0.69 0.92 0.65 1.39 0.94 0.68 0.85 0.60
Self-conscious 1.94 1.62 0.51 0.92 0.62 2.68 0.83 0.37 0.86 0.69
Avoid eating 2.06 1.41 0.72 0.92 0.62 1.15 0.53 0.46 0.86 0.39
Unable to eat 1.72 1.37 0.62 0.92 0.71 1.07 0.48 0.44 0.86 0.58
Interrupt meals 1.35 1.33 0.65 0.92 0.73 0.16 0.43 0.34 0.86 0.42
Upset 1.91 1.54 0.79 0.91 0.78 1.59 0.97 0.63 0.85 0.67
Embarrassed 1.51 1.35 0.74 0.91 0.77 1.62 1.18 0.61 0.86 0.69
Avoid going out 0.87 1.21 0.56 0.92 0.71 0.83 1.00 0.72 0.85 0.69
Less tolerant 0.45 .84 0.57 0.92 0.71 0.03 0.21 0.21 0.87 0.66
Irritable with others 0.58 .95 0.52 0.92 0.64 0.56 0.82 0.56 0.86 0.61
Unable to enjoy company 0.71 1.12 0.51 0.92 0.73 0.90 0.75 0.68 0.85 0.70
Life less satisfying 1.07 1.26 0.61 0.92 0.66 1.93 1.07 0.58 0.86 0.64

Factors with eigenvalue >1.0 before and after varimax rotation (Croatian OHIP-EDENT and Serbian OHIP-EDENT questionnaires).

Factor OHIP-EDENT-CRO
 OHIP-EDENT-SRB
Unrotated
 Rotated
 Unrotated
 Rotated
Eigenvalue % of variance Eigenvalue % of variance Eigenvalue % of variance Eigenvalue % of variance
1 8.08 42.51 3.88 20.41 5.83 30.66 4.75 24.98
2 2.10 11.04 3.38 17.78 2.72 14.33 3.22 16.94
3 1.35 7.08 3.03 15.93 1.50 7.90 1.77 9.33
4 1.13 5.96 2.37 12.47 1.23 6.44 1.54 8.08

Sampling strategy and participants’ demographic data.

Country Sample Sampling Research purpose n(% women) Mean age (years) M±SD Age range (years) Duration of edentulism (M±SD) Range of edentulism (years)
Croatia Removable denture wearers Convenience Internal consistency, Concurrent validity 95 (65%) 69.08±9.2 51–93 7.6±7.9 1–30
Removable denture wearers Consecutive Test-retest reliability 30 (60%) 71.8±10.2 52–91 7.6±6.6 1–30
Removable denture wearers Convenience Responsiveness 23 (61%) 66.6±10.2 51–93 7.6±5.9 2–28
Serbia Complete denture wearers Convenience Internal consistency, Concurrent validity 90 (51%) 63.8±11.5 35–90 3.5±7.6 1–21
Complete denture wearers Consecutive Test-retest reliability 30 (40%) 65.3±10.3 43–90 3.8±6.6 1–18
Complete denture wearers Convenience Responsiveness 21 (43%) 63.8±10.5 42–79 3.5±5.6 1–14
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