Repeated Measures ANOVA Description

RepeatedMeasures ANOVA Description

RepeatedMeasures ANOVA Description

Calciumis a vital mineral that controls the heartbeat, plays a crucial partin clotting of the blood and healthy bones building (Sahni,et al., 2013).Calcium intake of 1000-1200 mg/day is essential for men and women.

Thestudy was carried out to answer the following question: – is there astatistically significant difference in the average calcium intakeper day among adults having normal bone density, those withosteoporosis and osteopenia (low bone density that sometimes leads toosteoporosis)?

Nullhypothesis H0123thereis no statistically significant difference in the mean calcium intakein patients with normal bone density, patients with osteoporosis andpatients with osteopenia (Rouderet al., 2012).

Alternativehypothesis H11≠µ2≠µ3 thereis significant statistical differences in mean calcium intake inpatients with normal bone density, patients with osteoporosis andpatients with osteopenia. In other words means in calcium in intakeis not equal in all groups

(Rouderet al., 2012).

Themethod used was experimental since the 60 years adults were randomlyselected from the hospital’s list and later invited to participatein the study (Rouderet al., 2012).The method for data collection was recording of the daily calciumintake in foods and supplements (Rouderet al., 2012).Random sampling was employed to collect data. Two types of variableswere used in the experiment. The independent variable was effects ofdifferent amounts of calcium whereas the dependent variables are thenormal bone density osteopenia and osteoporosis (Rouderet al., 2012).

Ifthe H0 is greater than or equals to 3.68, the hypothesis is rejected. Theresults of calculation of the data were 1.26 that is less than 3.68.So there is a statistically significant evidence at a=0.05 to revealthat there is a difference existing in the mean in all the patients(Rouderet al., 2012).

Overall,the statistically significant difference suggests that calcium is anessential mineral in bone formation, and hence, a reason why peoplewith higher mean daily calcium in intake had a normal bone density(Rouderet al., 2012).

References

http://sphweb.bumc.bu.edu/otlt/MPH-Modules/BS/BS704_HypothesisTesting-ANOVA/BS704_HypothesisTesting-Anova_print.html

Rouder,J. N., Morey, R. D., Speckman, P. L., &amp Province, J. M. (2012).Default Bayes factors for ANOVA designs. Journalof Mathematical Psychology,56(5),356-374.

Sahni,S., Tucker, K. L., Kiel, D. P., Quach, L., Casey, V. A., &ampHannan, M. T. (2013). Milk and yogurt consumption are linked withhigher bone mineral density but not with hip fracture: the FraminghamOffspring Study. Archivesof osteoporosis,8(1-2),1-9.