A validated instrument to assess dentists’ knowledge about diabetes: the dental -diabetes questionnaire

Guimarães, Margarete Aparecida Gonçalves Melo; Prates, Amanda Augusto de Oliveira; Noronha, Vladimir Reimar Augusto de Souza; Pagano, Adriana; Soares, Aleida Nazareth; Reis, Janice Sepúlveda

doi:10.20396/bjos.v21i00.8665337

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Brasil

Brazilian Journal of Oral Sciences

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Brasil

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Sumário

Original Article • Braz J Oral Sci. 21 • 2022 • https://doi.org/10.20396/bjos.v21i00.8665337 copy

A validated instrument to assess dentists’ knowledge about diabetes: the dental -diabetes questionnaire

Authorship SCIMAGO INSTITUTIONS RANKINGS

Aim

To elaborate and validate an instrument for Brazilian Portuguese speakers, to assess dentists’ knowledge about care of patients with diabetes mellitus (Dental-Diabetes).

Methods

Methodological study comprising four stages: a) Elaboration of instrument; b) Content validation (computing Content Validity Index - CVI) based on Expert Committee assessment; c) Pre-test with 30 dentists, followed by assessment of suggestions by Expert Committee; d) Psychometric validation through instrument application in a sample of 127 dentists by means of the web tool e-Surv. Cronbach’s alpha and intraclass correlation coefficients were used to evaluate, respectively, internal consistency and reproducibility.

Results

The final version of the instrument consists of 22 questions (7 on sociodemographic data and 15 querying dentists’ knowledge) and those submitted for validation attained a CVI of 0.95 [95% CI 0.916-0,981], showing satisfactory internal consistency, with 0.794 Cronbach’s alpha [95% CI 0.741-0.842] and an intraclass correlation coefficient of 0.799 [95% CI: 0.746-0.846] between the test and retest scores.

Conclusions

Dental-Diabetes is a comprehensive instrument, culturally adequate and validated to assess dentists’ knowledge about care of patients with diabetes.

Diabetes mellitus; Dentists; Knowledge; Validation studies as topic

Variables		Pre-test (n=30)	Validation (n=127)

		N (%)	N (%)
Sex	Female	20 (67)	89 (70.1)
	Male	10 (33)	37 (29.1)
	I’d rather not say		1 (0.8)
Education	First degree	09 (30)	45 (35.4)
	Diploma course	14 (47)	68 (53.5)
	Master’s degree	02 (07)	8 (6.3)
	Doctor’s degree	04 (13)	6 (4.7)
	Post-Doctoral degree	01 (03)	0
Main area of professional expertise	General Clinic	11 (37)	52 (40.9)
	Surgery	2 (7)	5 (3.9)
	Dentistry	1 (3)	6 (4.7)
	Endodontics	2 (7)	17 (13.4)
	Pediatric Dentistry	1 (3)	6 (4.7)
	Orthodontics	0	21 (16.5)
	Periodontics	1 (3)	11 (8.7)
	Lecturing	6 (20)	0
	Research	1 (3)	0
	Others	5 (17)	9 (7.2)
First degree obtained	Less than 1 year ago	03 (10)	9 (7.1)
	1 to 5 years ago	06 (20)	19 (15)
	5 to 10 years ago	0	11 (8.7)
	10 to 20 years ago	07 (23)	21 (16.5)
	More than 20 years ago	14 (47)	67 (52.8)
Have you ever provided dental treatment to any patient with diabetes?	Yes	30 (100)	120 (94.5)
	No	0	7 (5.5)
Have you ever taken any training or course about Diabetes?	Yes	10 (33)	10 (7.9)
Have you ever taken any training or course about Diabetes?	No	20 (67)	117 (92.1)
Do you feel empowered to provide care for Diabetes patients?	Yes	19 (63)	73 (57.5)
	No	11 (37)	54 (42.5)

	V1	V2	V3
Initial number of questions (Part 1/ Part 2)	23 (7/16)	23 (7/16)	22 (7/15)
Number of questions requiring redrafting or exclusion (Part 1/ Part 2)	21 (7/14)	9 (0/9)	0
Suggestions deemed necessary by the Expert Committee	17	5	NA
Questions excluded due to agreement below 80%	0	1	NA
Final number of questions (Part 1/ Part 2)	23 (7/16)	22 (7/15)	22 (7/15)

Item*	Kappa index	Percentual Agreement Test-Retest	Cronbach’s Alpha if item is removed	95% CI for alpha
Q1	0.629	76.27	0.813	0.763 – 0.857
Q2	0.368	61.34	0.787	0.729 – 0.837
Q3	0.658	79.17	0.797	0.743 – 0.845
Q4	0.594	88.50	0.798	0.745 – 0.846
Q5a	0.174	69.75	0.796	0.741 – 0.844
Q5b	0.22	85.12	0.796	0.741 – 0.844
Q5c	0.158	85.12	0.798	0.744 – 0.845
Q5d	0.501	97.58	0.797	0.743 – 0.845
Q5e	0.195	72.48	0.8	0.747 – 0.847
Q6	0.474	83.76	0.804	0.751 – 0.850
Q7a	0.335	91.13	0.794	0.794 – 0.842
Q7b	0.601	97.64	0.795	0.741 – 0.843
Q7c	0.315	76.72	0.792	0.736 – 0.840
Q7d	0.368	77.87	0.799	0.746 – 0.846
Q8	0.605	87.70	0.778	0.718 – 0.830
Q9	0.434	69.72	0.784	0.727 – 0.835
Q10	0.418	80.36	0.786	0.729 – 0.837
Q11	0.352	70.09	0.8	0.747 – 0.847
Q12a	0.478	79.65	0.8	0.746 – 0.847
Q12b	0.191	89.47	0.799	0.745 – 0.846
Q12c	0.239	85.84	0.796	0.741 – 0.844
Q13	0.675	89.34	0.798	0.744 – 0.845
Q14a	0.534	86.09	0.794	0.739 – 0.842
Q14b	0.391	80	0.793	0.738 – 0.842
Q14c	0.263	69.57	0.795	0.740 – 0.843
Q14d	0.3	7.27	0.796	0.741 – 0.844
Q15a	0.563	77.27	0.785	0.728 – 0.836
Q15b	0.464	76.85	0.787	0.730 – 0.837
Q15c	0.549	76.32	0.781	0.722 – 0.832
Q15d	0.464	84.35	0.781	0.723 – 0.833
Q15e	0.544	73.50	0.784	0.727 – 0.835

Faculdade de Odontologia de Piracicaba - UNICAMP Avenida Limeira, 901, cep: 13414-903, Piracicaba - São Paulo / Brasil, Tel: +55 (19) 2106-5200 - Piracicaba - SP - Brazil
E-mail: brjorals@unicamp.br

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[1] Corresponding author: Janice Sepúlveda Santa Casa de Misericórdia – Belo Horizonte, MG, Brazil Email: janicesepulveda@gmail.com