Deriving objectively-measured sedentary indices from free-living accelerometry data in rural and urban African settings: a cost effective approach

Abstract

Objectives To investigate the agreement between two data reduction approaches for detecting sedentary breaks from uni-axial accelerometry data collected in human participants. Free-living, uni-axial accelerometer data (n = 318) were examined for sedentary breaks using two different methods (Healy–Matthews; MAH/UFFE). The data were cleaned and reduced using MAH/UFFE Analyzer software and custom Microsoft Excel macro’s, such that the average daily sedentary break number were calculated for each data record, for both methods. Results The Healy–Matthews and MAH/UFFE average daily break number correlated closely (R2 = 99.9%) and there was high agreement (mean difference: + 0.7 breaks/day; 95% limits of agreement: − 0.06 to + 1.4 breaks/day). A slight bias of approximately + 1 break/day for the MAH/UFFE Analyzer was evident for both the regression and agreement analyses. At a group level there were no statistically or practically significant differences within sample groups between the two methods.

Upaya Peningkatan Pengetahuan Dasar Komputasi Statistik Menggunakan Fitur Data Analysis

“…Sama halnya dengan SPSS diperuntuhkan dalam menganalisis data antara lain menghitung toksifitas LD50 (lethal dose) atau penyelidikan pola penipisan cortical pada pasien LPA (Afasia progresif logopenik) dengan menerapkan model GLM (General Linear Model) (Lei & Sun, 2018;Thanprasertsuk & Likitjaroen, 2021). Selain menggunakan software yang ditelah dijabarkan sebelumnya, Billo, (2007); Winston (2007); Bancroft & Bourret, (2008); Neyeloff et al, (2012); Chien et al, (2017); Divisi et al, (2017) ;Chok, (2019) ;Cook, (2019); Fuller & Dubuque, (2019), memaparkan terdapat fitur tertentu di microsoft excel yang difungsikan untuk menganalisis data dan memaparkan visualisasi grafik hasil penelitian. Fitur yang dimaksud berupa formulas berisikan tools antara lain logical, statistika di bagian more fungtion dan didukung oleh VBA/macro (Visual Basic for Application) untuk menuliskan scrib pemrograman.…”