TY - JOUR
T1 - Usability Testing Finds Problems for Novice Users of Pediatric Portals
AU - Britto, Maria T.
AU - Jimison, Holly B.
AU - Munafo, Jennifer Knopf
AU - Wissman, Jennifer
AU - Rogers, Michelle L.
AU - Hersh, William
N1 - Funding Information:
This research was funded in part by the National Library of Medicine grant #5F38LM008876, Evaluation of Pediatric Patient Portals, to the first author. The findings were presented in part at the 2007 National Library of Medicine Fellows Conference, June 27, 2007, Stanford University, San Francisco, CA.
PY - 2009/9
Y1 - 2009/9
N2 - Objective: Patient portals may improve pediatric chronic disease outcomes, but few have been rigorously evaluated for usability by parents. Using scenario-based testing with think-aloud protocols, we evaluated the usability of portals for parents of children with cystic fibrosis, diabetes or arthritis. Design: Sixteen parents used a prototype and test data to complete 14 tasks followed by a validated satisfaction questionnaire. Three iterations of the prototype were used. Measurements: During the usability testing, we measured the time it took participants to complete or give up on each task. Sessions were videotaped and content-analyzed for common themes. Following testing, participants completed the Computer Usability Satisfaction Questionnaire which measured their opinions on the efficiency of the system, its ease of use, and the likability of the system interface. A 7-point Likert scale was used, with seven indicating the highest possible satisfaction. Results: Mean task completion times ranged from 73 (± 61) seconds to locate a document to 431 (± 286) seconds to graph laboratory results. Tasks such as graphing, location of data, requesting access, and data interpretation were challenging. Satisfaction was greatest for interface pleasantness (5.9 ± 0.7) and likeability (5.8 ± 0.6) and lowest for error messages (2.3 ± 1.2) and clarity of information (4.2 ± 1.4). Overall mean satisfaction scores improved between iteration one and three. Conclusions: Despite parental involvement and prior heuristic testing, scenario-based testing demonstrated difficulties in navigation, medical language complexity, error recovery, and provider-based organizational schema. While such usability testing can be expensive, the current study demonstrates that it can assist in making healthcare system interfaces for laypersons more user-friendly and potentially more functional for patients and their families.
AB - Objective: Patient portals may improve pediatric chronic disease outcomes, but few have been rigorously evaluated for usability by parents. Using scenario-based testing with think-aloud protocols, we evaluated the usability of portals for parents of children with cystic fibrosis, diabetes or arthritis. Design: Sixteen parents used a prototype and test data to complete 14 tasks followed by a validated satisfaction questionnaire. Three iterations of the prototype were used. Measurements: During the usability testing, we measured the time it took participants to complete or give up on each task. Sessions were videotaped and content-analyzed for common themes. Following testing, participants completed the Computer Usability Satisfaction Questionnaire which measured their opinions on the efficiency of the system, its ease of use, and the likability of the system interface. A 7-point Likert scale was used, with seven indicating the highest possible satisfaction. Results: Mean task completion times ranged from 73 (± 61) seconds to locate a document to 431 (± 286) seconds to graph laboratory results. Tasks such as graphing, location of data, requesting access, and data interpretation were challenging. Satisfaction was greatest for interface pleasantness (5.9 ± 0.7) and likeability (5.8 ± 0.6) and lowest for error messages (2.3 ± 1.2) and clarity of information (4.2 ± 1.4). Overall mean satisfaction scores improved between iteration one and three. Conclusions: Despite parental involvement and prior heuristic testing, scenario-based testing demonstrated difficulties in navigation, medical language complexity, error recovery, and provider-based organizational schema. While such usability testing can be expensive, the current study demonstrates that it can assist in making healthcare system interfaces for laypersons more user-friendly and potentially more functional for patients and their families.
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U2 - 10.1197/jamia.M3154
DO - 10.1197/jamia.M3154
M3 - Article
C2 - 19567793
AN - SCOPUS:69549129523
SN - 1067-5027
VL - 16
SP - 660
EP - 669
JO - Journal of the American Medical Informatics Association
JF - Journal of the American Medical Informatics Association
IS - 5
ER -