E-ISSN 2277-338X | ISSN 2320-4664
 

Original Research 


Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers

Osaro Mgbere, Mamta Singh, Raouf Arafat.

Abstract
Background: Although preventive care services and risk reduction counseling are offered to HIV patients during their routine clinic visits, assessment of clinicians practice performance has been difficult because of the use of many separate indicators.

Objective: To assess the measurement system of empirically-derived composite measure of preventive care practices of HIV medical care providers (overall preventive care counseling index, OPCi) in managed care clinical settings using the following statistical properties: precision (gauge reproducibility and repeatability, gauge R&R), accuracy (bias and linearity), stability, and process capability.
Materials and Methods: Data used were obtained from the cross-sectional survey of HIV medical care providers in 13 HIV care facilities in Houston/Harris County, Texas, USA, that participated in the Centers for Disease Control and Prevention (CDC) Medical Monitoring Project in 2009.

Result: Domain-specific preventive care counseling indices developed produced significant (p ≤ 0.05) Cronbach’s alpha coefficients that ranged from 0.64 to 0.91. The variance components for OPCi attributed to the provider and patient statuses were 29.7% and 31.4%, respectively, while the gauge R&R was 68.6%. A high percent gauge R&R precision to tolerance ratio (99.13%) and precision to total variation ratio (82.85%) were obtained. With measurement system intraclass correlations without bias factors (rpe) of 0.45 and with bias factors (rb) of 0.31, the system was classified as “third class monitor,” indicating the need for process improvement. However, the system expanded uncertainty was within set range at 99% confidence level making it statistically “stable” and “capable” at a process capability ratio (Cp) of 0.999 (95% CI: 0.793–1.205) and long-term sigma yield of 2.292.

Conclusion: Reduction in measurement variations would enhance providers’ performance output and improve both the quality of preventive care counseling received and the overall health outcome of HIV patients.

Key words: HIV/AIDS, HIV medical care provider, preventive care counseling, composite index, measurement system analysis


 
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How to Cite this Article
Pubmed Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. Int J Med Sci Public Health. 2015; 4(12): 1640-1654. doi:10.5455/ijmsph.2015.15032015336


Web Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. http://www.ijmsph.com/?mno=182529 [Access: October 18, 2019]. doi:10.5455/ijmsph.2015.15032015336


AMA (American Medical Association) Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. Int J Med Sci Public Health. 2015; 4(12): 1640-1654. doi:10.5455/ijmsph.2015.15032015336



Vancouver/ICMJE Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. Int J Med Sci Public Health. (2015), [cited October 18, 2019]; 4(12): 1640-1654. doi:10.5455/ijmsph.2015.15032015336



Harvard Style

Osaro Mgbere, Mamta Singh, Raouf Arafat (2015) Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. Int J Med Sci Public Health, 4 (12), 1640-1654. doi:10.5455/ijmsph.2015.15032015336



Turabian Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. 2015. Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. International Journal of Medical Science and Public Health, 4 (12), 1640-1654. doi:10.5455/ijmsph.2015.15032015336



Chicago Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. "Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers." International Journal of Medical Science and Public Health 4 (2015), 1640-1654. doi:10.5455/ijmsph.2015.15032015336



MLA (The Modern Language Association) Style

Osaro Mgbere, Mamta Singh, Raouf Arafat. "Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers." International Journal of Medical Science and Public Health 4.12 (2015), 1640-1654. Print. doi:10.5455/ijmsph.2015.15032015336



APA (American Psychological Association) Style

Osaro Mgbere, Mamta Singh, Raouf Arafat (2015) Measurement system analysis (MSA) of empirically derived composite measure of preventive care counseling practices of HIV medical care providers. International Journal of Medical Science and Public Health, 4 (12), 1640-1654. doi:10.5455/ijmsph.2015.15032015336





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