Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia

Fatma D.M. Abdallah

doi:10.5455/ajvs.16828

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Original Article
Online Published: 13 Dec 2018

AJVS. 2019; 60(1): 49-54

doi: 10.5455/ajvs.16828

Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia

Fatma D.m. Abdallah.

Abstract
This study aims to model and analyze repeated observations in some biological sciences. Repeated measure ANOVA is used to assess the effects of some treatments over time. Data obtained from an experimental study examining the effect of some immunostimulants in Nile tilapia fish which measured repeatedly over time. The analysis is applied by using the software SPSS Version 20 on the data collected at two time points 14th day and 28th day so the correct test was two way repeated measure design. The assumptions of the test were achieved where Huynh-Feldt and Greenhouse-Geisser measures were not significant (P-value > 0.05). The P value for time, treatments and the interaction of them was 0.000**, so they have a highly significance on the (outcome variable) lysozymes activity of Nile tilapia. Bonferroni correction is used as a post hoc test and its result showed a difference between the groups for each parameter. These results of univariate analysis agreed with the multivariate analysis results.

Key words: Repeated measure ANOVA, sphericity assumptions, lysozymes, P value and Bonferroni procedure.

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Pubmed Style

Fatma D.M. Abdallah. Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. AJVS. 2019; 60(1): 49-54. doi:10.5455/ajvs.16828

Web Style

Fatma D.M. Abdallah. Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. https://www.alexjvs.com/?mno=16828 [Access: May 03, 2025]. doi:10.5455/ajvs.16828

AMA (American Medical Association) Style

Fatma D.M. Abdallah. Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. AJVS. 2019; 60(1): 49-54. doi:10.5455/ajvs.16828

Vancouver/ICMJE Style

Fatma D.M. Abdallah. Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. AJVS. (2019), [cited May 03, 2025]; 60(1): 49-54. doi:10.5455/ajvs.16828

Harvard Style

Fatma D.M. Abdallah (2019) Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. AJVS, 60 (1), 49-54. doi:10.5455/ajvs.16828

Turabian Style

Fatma D.M. Abdallah. 2019. Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. Alexandria Journal of Veterinary Sciences, 60 (1), 49-54. doi:10.5455/ajvs.16828

Chicago Style

Fatma D.M. Abdallah. "Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia." Alexandria Journal of Veterinary Sciences 60 (2019), 49-54. doi:10.5455/ajvs.16828

MLA (The Modern Language Association) Style

Fatma D.M. Abdallah. "Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia." Alexandria Journal of Veterinary Sciences 60.1 (2019), 49-54. Print. doi:10.5455/ajvs.16828

APA (American Psychological Association) Style

Fatma D.M. Abdallah (2019) Statistical Approaches for Treatments over Time (Repeated Observations) in Nile Tilapia. Alexandria Journal of Veterinary Sciences, 60 (1), 49-54. doi:10.5455/ajvs.16828

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