Have a personal or library account? Click to login

Sinhala version of dementia knowledge assessment scale (SI-DKAS): a validation cross-sectional survey among nursing students

Open Access
|Sep 2025

Figures & Tables

Figure 1.

Path diagram*: CFA. Note: *The number of items was labeled based on the original version of DKAS.
Note: CFA, confirmatory factor analysis; DKAS, Dementia Knowledge Assessment Scale.
Path diagram*: CFA. Note: *The number of items was labeled based on the original version of DKAS. Note: CFA, confirmatory factor analysis; DKAS, Dementia Knowledge Assessment Scale.

Fit indices for CFA of the 18-item Si-DKAS

Fit indexValues of Model 1 (25 items)Values of Model 2 (21 items)Value of Model 3 (18 items)
Chi-square (χ2)P < 0.001P < 0.001P < 0.001
χ2/df2.5412.4502.116
CFI0.6110.6980.809
TLI0.5670.6530.773
SRMR0.0480.0470.040
RMSEA0.0630.0610.053

Discriminant validity (N = 394)_

Variables (Kruskal–Wallis H test)NTotal Si-DKAS
Mean rankK-WH valueSig.
Academic year 86.015<0.001*
  Early second year127120.58
  Late second year57226.80
  Third year210236.07
Preference for dementia care in future 7.6710.022*
  Preference for providing dementia care217186.71
  No preference for providing dementia care28174.75
  Did not decided149217.48

Characteristics of the respondents (N = 394)_

Sociodemographic characteristicsMeanSDn%
Age (in years)24.203.48
Gender
  Male 4010.2
  Female 35489.8
Academic year
  Second year (no exposure to theory or clinical experience in dementia) 12732.2
  Early third year (completed the theory only) 5714.5
  End of third year (completed the theory and clinical experience) 21053.3
Participation in other training related to dementia care
  Yes 71.8
  No 38798.2
Preference for providing care for people with dementia in future
  Strongly agree 328.1
  Agree 18547.0
  Not decided 14937.8
  Disagree 266.6
  Strongly disagree 20.5

Total and item-level scores (N = 394)_

Scale or subscale/scoreMean of the scaleStandardized mean score/100 (%)Cronbach’s alpha
MeanSD
Total Si-DKAS/3619.816.0755.020.701
Care consideration/147.783.0855.570.631
Causes of dementia/84.012.3850.150.598
Health promotion/63.731.6762.100.347
Misconceptions about dementia/84.282.1153.500.487

Rotated component matrix: factor loading and item communalities by PCA (N = 394)_

Item No. (original version)Item No. (Si-DKAS)ItemComponent (factor)Name of factorsItem communality (h2)
1234
2215People with advanced dementia may have difficulty speaking.0.619 Care considerations0.478
2518Daily care for a person with advanced dementia is effective when it focuses on providing comfort.0.549 Care considerations0.372
2114Movement is generally affected in the later stages of dementia.0.549 Care considerations0.332
1712People experiencing advanced dementia often communicate through body language.0.541 Care considerations0.465
2316People experiencing dementia often have difficulty learning new skills.0.522 Care considerations0.341
109Symptoms of depression can be mistaken for symptoms of dementia.0.474 Care considerations0.316
2417Difficulty eating and drinking generally occurs in the later stages of dementia.0.406 Care considerations0.178
33People can recover from the most common forms of dementia. 0.699 Causes and characteristics of dementia0.489
65Blood vessel disease (vascular dementia) is the most common form of dementia. 0.668 Causes and characteristics of dementia0.469
22Alzheimer’s disease is the most common form of dementia. 0.563 Causes and characteristics of dementia0.387
11Dementia is a normal part of the ageing process. 0.560 Causes and characteristics of dementia0.340
1211Early diagnosis of dementia does not generally improve quality of life for people experiencing the condition 0.588 Health promotion0.382
1110Exercise is generally beneficial for people experiencing dementia. 0.438 Health promotion0.399
98Maintaining a healthy lifestyle does not reduce the risk of developing the most common forms of dementia. 0.431 Health promotion0.331
87Having high blood pressure increases a person’s risk of developing dementia. 0.685Misconceptions about dementia0.492
44Dementia does not result from physical changes in the brain. 0.647Misconceptions about dementia0.444
76Most forms of dementia do not generally shorten a person’s life. 0.440Misconceptions about dementia0.340
2013People experiencing dementia do not generally have problems making decisions. 0.435Misconceptions about dementia0.356
Eigenvalue3.3951.9081.6331.425
% of the variance14.76123.05630.15736.355
DOI: https://doi.org/10.2478/fon-2025-0037 | Journal eISSN: 2544-8994 | Journal ISSN: 2097-5368
Language: English
Page range: 333 - 344
Submitted on: Jul 28, 2024
Accepted on: Dec 18, 2024
Published on: Sep 25, 2025
Published by: Shanxi Medical Periodical Press
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Thilanka Jagoda, Sarath Rathnayake, published by Shanxi Medical Periodical Press
This work is licensed under the Creative Commons Attribution 4.0 License.