Trends in Glaucoma Filtration Procedures: A Retrospective Administrative Health Records Analysis Over a 13-Year Period in Canada.

Clin Ophthalmol · 2020 · PMC7039086 · PMID 32109986

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a significant trendno p-value reported

The slopes of the trend lines were compared using analysis of covariance to (1) assess whether a significant trend existed over time, and (2) to determine whether a significant difference existed between the slopes of the frequency trend lines for the IDD and no-IDD groups – ie that the trend line slopes are non-parallel. 13 , 14 All statistical analysis was performed using Prism 7 (Version 7.03, GraphPad Software Inc.).

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