Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia

BACKGROUND: Patient's knowledge on diabetes, hypertension and hyperlipidaemia and its medications can be used as one of the outcome measures to assess the effectiveness of educational intervention. To date, no such instrument has been validated in Malaysia. Therefore, the aim of this study was...

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Main Authors: Lai, Pauline Siew Mei, Chua, Siew Siang, Tan, Ching Hooi, Chan, Siew Pheng
Format: Article
Language:English
Published: BMC 2012
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Online Access:http://eprints.um.edu.my/9073/1/Lai-2012-Validation_of_the_di.pdf
http://eprints.um.edu.my/9073/
https://doi.org/10.1186/1471-2288-12-18
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spelling my.um.eprints.90732019-11-29T05:12:26Z http://eprints.um.edu.my/9073/ Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia Lai, Pauline Siew Mei Chua, Siew Siang Tan, Ching Hooi Chan, Siew Pheng R Medicine BACKGROUND: Patient's knowledge on diabetes, hypertension and hyperlipidaemia and its medications can be used as one of the outcome measures to assess the effectiveness of educational intervention. To date, no such instrument has been validated in Malaysia. Therefore, the aim of this study was to evaluate the validity and reliability of the Diabetes, Hypertension and Hyperlipidemia (DHL) knowledge instrument for assessing the knowledge of patients with type 2 diabetes in Malaysia. METHODS: A 28-item instrument which comprised of 5 domains: diabetes, hypertension, hyperlipidemia, medications and general issues was designed and tested. One point was given for every correct answer, whilst zero was given for incorrect answers. Scores ranged from 0 to 28, which were then converted into percentage. This was administered to 77 patients with type 2 diabetes in a tertiary hospital, who were on medication(s) for diabetes and who could understand English (patient group), and to 40 pharmacists (professional group). The DHL knowledge instrument was administered again to the patient group after one month. Excluded were patients less than 18 years old. RESULTS: Flesch reading ease was 60, which is satisfactory, while the mean difficulty factor(SD) was 0.74(0.21), indicating that DHL knowledge instrument was moderately easy. Internal consistency of the instrument was good, with Cronbach's alpha = 0.791. The test-retest scores showed no significant difference for 26 out of the 28 items, indicating that the questionnaire has achieved stable reliability. The overall mean(SD) knowledge scores was significantly different between the patient and professional groups 74.35(14.88) versus 93.84(6.47), p < 0.001. This means that the DHL knowledge instrument could differentiate the knowledge levels of participants. The DHL knowledge instrument shows similar psychometric properties as other validated questionnaires. CONCLUSIONS: The DHL knowledge instrument shows good promise to be adopted as an instrument for assessing diabetic patients' knowledge concerning their disease conditions and medications in Malaysia. BMC 2012 Article PeerReviewed application/pdf en http://eprints.um.edu.my/9073/1/Lai-2012-Validation_of_the_di.pdf Lai, Pauline Siew Mei and Chua, Siew Siang and Tan, Ching Hooi and Chan, Siew Pheng (2012) Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia. BMC Medical Research Methodology, 12. p. 18. ISSN 1471-2288 https://doi.org/10.1186/1471-2288-12-18 doi:10.1186/1471-2288-12-18
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic R Medicine
spellingShingle R Medicine
Lai, Pauline Siew Mei
Chua, Siew Siang
Tan, Ching Hooi
Chan, Siew Pheng
Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
description BACKGROUND: Patient's knowledge on diabetes, hypertension and hyperlipidaemia and its medications can be used as one of the outcome measures to assess the effectiveness of educational intervention. To date, no such instrument has been validated in Malaysia. Therefore, the aim of this study was to evaluate the validity and reliability of the Diabetes, Hypertension and Hyperlipidemia (DHL) knowledge instrument for assessing the knowledge of patients with type 2 diabetes in Malaysia. METHODS: A 28-item instrument which comprised of 5 domains: diabetes, hypertension, hyperlipidemia, medications and general issues was designed and tested. One point was given for every correct answer, whilst zero was given for incorrect answers. Scores ranged from 0 to 28, which were then converted into percentage. This was administered to 77 patients with type 2 diabetes in a tertiary hospital, who were on medication(s) for diabetes and who could understand English (patient group), and to 40 pharmacists (professional group). The DHL knowledge instrument was administered again to the patient group after one month. Excluded were patients less than 18 years old. RESULTS: Flesch reading ease was 60, which is satisfactory, while the mean difficulty factor(SD) was 0.74(0.21), indicating that DHL knowledge instrument was moderately easy. Internal consistency of the instrument was good, with Cronbach's alpha = 0.791. The test-retest scores showed no significant difference for 26 out of the 28 items, indicating that the questionnaire has achieved stable reliability. The overall mean(SD) knowledge scores was significantly different between the patient and professional groups 74.35(14.88) versus 93.84(6.47), p < 0.001. This means that the DHL knowledge instrument could differentiate the knowledge levels of participants. The DHL knowledge instrument shows similar psychometric properties as other validated questionnaires. CONCLUSIONS: The DHL knowledge instrument shows good promise to be adopted as an instrument for assessing diabetic patients' knowledge concerning their disease conditions and medications in Malaysia.
format Article
author Lai, Pauline Siew Mei
Chua, Siew Siang
Tan, Ching Hooi
Chan, Siew Pheng
author_facet Lai, Pauline Siew Mei
Chua, Siew Siang
Tan, Ching Hooi
Chan, Siew Pheng
author_sort Lai, Pauline Siew Mei
title Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
title_short Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
title_full Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
title_fullStr Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
title_full_unstemmed Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia
title_sort validation of the diabetes, hypertension and hyperlipidemia (dhl) knowledge instrument in malaysia
publisher BMC
publishDate 2012
url http://eprints.um.edu.my/9073/1/Lai-2012-Validation_of_the_di.pdf
http://eprints.um.edu.my/9073/
https://doi.org/10.1186/1471-2288-12-18
_version_ 1651867342473265152
score 13.209306