Postural assessment software (PAS/SAPO): validation and reliabiliy
OBJECTIVE: This study was designed to estimate the accuracy of the postural assessment software (PAS/SAPO) for measurement of corporal angles and distances as well as the inter- and intra-rater reliabilities. INTRODUCTION: Postural assessment software was developed as a subsidiary tool for postural...
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2010-01-01
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doaj-e1e368f139f44ddf9463f50132d2412b2020-11-25T00:20:21ZengFaculdade de Medicina / USPClinics1807-59321980-53222010-01-0165767568110.1590/S1807-59322010000700005Postural assessment software (PAS/SAPO): validation and reliabiliyElizabeth Alves G. FerreiraMarcos DuarteEdison Puig MaldonadoThomaz Nogueira BurkeAmelia Pasqual MarquesOBJECTIVE: This study was designed to estimate the accuracy of the postural assessment software (PAS/SAPO) for measurement of corporal angles and distances as well as the inter- and intra-rater reliabilities. INTRODUCTION: Postural assessment software was developed as a subsidiary tool for postural assessment. It is easy to use and available in the public domain. Nonetheless, validation studies are lacking. METHODS: The study sample consisted of 88 pictures from 22 subjects, and each subject was assessed twice (1 week interval) by 5 blinded raters. Inter- and intra-rater reliabilities were estimated using the intraclass correlation coefficient. To estimate the accuracy of the software, an inanimate object was marked with hallmarks using pre-established parameters. Pictures of the object were rated, and values were checked against the known parameters. RESULTS: Inter-rater reliability was excellent for 41% of the variables and very good for 35%. Ten percent of the variables had acceptable reliability, and 14% were defined as non-acceptable. For intra-rater reliability, 44.8% of the measurements were considered to be excellent, 23.5% were very good, 12.4% were acceptable and 19.3% were considered non-acceptable. Angular measurements had a mean error analisys of 0.11°, and the mean error analisys for distance was 1.8 mm. DISCUSSION: Unacceptable intraclass correlation coefficient values typically used the vertical line as a reference, and this may have increased the inaccuracy of the estimates. Increased accuracies were obtained by younger raters with more sophisticated computer skills, suggesting that past experience influenced results. CONCLUSION: The postural assessment software was accurate for measuring corporal angles and distances and should be considered as a reliable tool for postural assessment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322010000700005Postural assessmentSoftwareValidationReliabilityPosture |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Elizabeth Alves G. Ferreira Marcos Duarte Edison Puig Maldonado Thomaz Nogueira Burke Amelia Pasqual Marques |
spellingShingle |
Elizabeth Alves G. Ferreira Marcos Duarte Edison Puig Maldonado Thomaz Nogueira Burke Amelia Pasqual Marques Postural assessment software (PAS/SAPO): validation and reliabiliy Clinics Postural assessment Software Validation Reliability Posture |
author_facet |
Elizabeth Alves G. Ferreira Marcos Duarte Edison Puig Maldonado Thomaz Nogueira Burke Amelia Pasqual Marques |
author_sort |
Elizabeth Alves G. Ferreira |
title |
Postural assessment software (PAS/SAPO): validation and reliabiliy |
title_short |
Postural assessment software (PAS/SAPO): validation and reliabiliy |
title_full |
Postural assessment software (PAS/SAPO): validation and reliabiliy |
title_fullStr |
Postural assessment software (PAS/SAPO): validation and reliabiliy |
title_full_unstemmed |
Postural assessment software (PAS/SAPO): validation and reliabiliy |
title_sort |
postural assessment software (pas/sapo): validation and reliabiliy |
publisher |
Faculdade de Medicina / USP |
series |
Clinics |
issn |
1807-5932 1980-5322 |
publishDate |
2010-01-01 |
description |
OBJECTIVE: This study was designed to estimate the accuracy of the postural assessment software (PAS/SAPO) for measurement of corporal angles and distances as well as the inter- and intra-rater reliabilities. INTRODUCTION: Postural assessment software was developed as a subsidiary tool for postural assessment. It is easy to use and available in the public domain. Nonetheless, validation studies are lacking. METHODS: The study sample consisted of 88 pictures from 22 subjects, and each subject was assessed twice (1 week interval) by 5 blinded raters. Inter- and intra-rater reliabilities were estimated using the intraclass correlation coefficient. To estimate the accuracy of the software, an inanimate object was marked with hallmarks using pre-established parameters. Pictures of the object were rated, and values were checked against the known parameters. RESULTS: Inter-rater reliability was excellent for 41% of the variables and very good for 35%. Ten percent of the variables had acceptable reliability, and 14% were defined as non-acceptable. For intra-rater reliability, 44.8% of the measurements were considered to be excellent, 23.5% were very good, 12.4% were acceptable and 19.3% were considered non-acceptable. Angular measurements had a mean error analisys of 0.11°, and the mean error analisys for distance was 1.8 mm. DISCUSSION: Unacceptable intraclass correlation coefficient values typically used the vertical line as a reference, and this may have increased the inaccuracy of the estimates. Increased accuracies were obtained by younger raters with more sophisticated computer skills, suggesting that past experience influenced results. CONCLUSION: The postural assessment software was accurate for measuring corporal angles and distances and should be considered as a reliable tool for postural assessment. |
topic |
Postural assessment Software Validation Reliability Posture |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322010000700005 |
work_keys_str_mv |
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