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eye diagram  (Tektronix inc)

 
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    Tektronix inc eye diagram
    Eye Diagram, supplied by Tektronix inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/eye+diagram/10__1016_slash_j__rio__2021__100110-179-10-19?v=Tektronix+inc
    Average 90 stars, based on 1 article reviews
    eye diagram - by Bioz Stars, 2026-08
    90/100 stars

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    Correlation coefficients, 95% CIs between Huawei Watch GT2 and Actigraph GT3X+ measurements, and independent sample t tests on mean absolute percentage error between the YA <xref ref-type= a and MAAO b groups." width="100%" height="100%">

    Journal: JMIR Formative Research

    Article Title: Accuracy of the Huawei GT2 Smartwatch for Measuring Physical Activity and Sleep Among Adults During Daily Life: Instrument Validation Study

    doi: 10.2196/59521

    Figure Lengend Snippet: Correlation coefficients, 95% CIs between Huawei Watch GT2 and Actigraph GT3X+ measurements, and independent sample t tests on mean absolute percentage error between the YA a and MAAO b groups.

    Article Snippet: To intuitively display the accuracy of different indicators of the Huawei Watch GT2, Bull’s-eye diagrams based on the Actigraph accelerometer were constructed.

    Techniques:

    Measured mean, mean percentage error (MPE), mean absolute percentage error (MAPE), and deviation values in Bland-Altman analysis for the Huawei Watch GT2 and Actigraph GT3X+ accelerometer for step count (SC; steps), total daily activity energy expenditure (TDAEE; kcal), and total sleep time (TST; minutes), with associated SDs.

    Journal: JMIR Formative Research

    Article Title: Accuracy of the Huawei GT2 Smartwatch for Measuring Physical Activity and Sleep Among Adults During Daily Life: Instrument Validation Study

    doi: 10.2196/59521

    Figure Lengend Snippet: Measured mean, mean percentage error (MPE), mean absolute percentage error (MAPE), and deviation values in Bland-Altman analysis for the Huawei Watch GT2 and Actigraph GT3X+ accelerometer for step count (SC; steps), total daily activity energy expenditure (TDAEE; kcal), and total sleep time (TST; minutes), with associated SDs.

    Article Snippet: To intuitively display the accuracy of different indicators of the Huawei Watch GT2, Bull’s-eye diagrams based on the Actigraph accelerometer were constructed.

    Techniques: Activity Assay

    Bland-Altman plots of the Huawei Watch GT2 and Actigraph GT3X+ in overall phases for different groups and indicators. The middle line represents the mean difference between the GT2 and accelerometer (negative values indicate an overestimation of the GT2, whereas positive values indicate an underestimation), and the upper and lower dashed lines indicate the limit of agreement (1.96 × SD of the difference scores). The green dots indicate YAs, and the red dots indicate MAAOs. Panel A displays the Bland-Altman plot for step count (steps) across different groups, panel B presents the Bland-Altman plot for total daily activity energy expenditure (kcal) across different groups, and panel C illustrates the Bland-Altman plot for total sleep time (minutes) across different groups. MAAO: middle-aged and older adults; YA: young adults.

    Journal: JMIR Formative Research

    Article Title: Accuracy of the Huawei GT2 Smartwatch for Measuring Physical Activity and Sleep Among Adults During Daily Life: Instrument Validation Study

    doi: 10.2196/59521

    Figure Lengend Snippet: Bland-Altman plots of the Huawei Watch GT2 and Actigraph GT3X+ in overall phases for different groups and indicators. The middle line represents the mean difference between the GT2 and accelerometer (negative values indicate an overestimation of the GT2, whereas positive values indicate an underestimation), and the upper and lower dashed lines indicate the limit of agreement (1.96 × SD of the difference scores). The green dots indicate YAs, and the red dots indicate MAAOs. Panel A displays the Bland-Altman plot for step count (steps) across different groups, panel B presents the Bland-Altman plot for total daily activity energy expenditure (kcal) across different groups, and panel C illustrates the Bland-Altman plot for total sleep time (minutes) across different groups. MAAO: middle-aged and older adults; YA: young adults.

    Article Snippet: To intuitively display the accuracy of different indicators of the Huawei Watch GT2, Bull’s-eye diagrams based on the Actigraph accelerometer were constructed.

    Techniques: Activity Assay

    Bull’s-eye diagrams with Actigraph GT3X+ as the reference measure. The x-axis represents the MPE, and the y-axis represents the ICC between the GT2 and the accelerometer. The good accuracy of the Huawei Watch GT2’s measurement is indicated when the scatter point falls steadily near the origin (MPE=0, ICC=1). ICC: intraclass correlation coefficient; MPE: mean percentage error; SC: step count (steps); TDAEE: total daily activity energy expenditure (kcal); TST: total sleep time (minutes).

    Journal: JMIR Formative Research

    Article Title: Accuracy of the Huawei GT2 Smartwatch for Measuring Physical Activity and Sleep Among Adults During Daily Life: Instrument Validation Study

    doi: 10.2196/59521

    Figure Lengend Snippet: Bull’s-eye diagrams with Actigraph GT3X+ as the reference measure. The x-axis represents the MPE, and the y-axis represents the ICC between the GT2 and the accelerometer. The good accuracy of the Huawei Watch GT2’s measurement is indicated when the scatter point falls steadily near the origin (MPE=0, ICC=1). ICC: intraclass correlation coefficient; MPE: mean percentage error; SC: step count (steps); TDAEE: total daily activity energy expenditure (kcal); TST: total sleep time (minutes).

    Article Snippet: To intuitively display the accuracy of different indicators of the Huawei Watch GT2, Bull’s-eye diagrams based on the Actigraph accelerometer were constructed.

    Techniques: Activity Assay