Effects of Myopia on Later Physical Activity †MyAssignmenthelp.com

Question: Discuss about the Effects of Myopia on Later Physical Activity. Answer: Introduction: The Avon Longitudinal Study of Parents and Children recruited pregnant women who were expected to give birth between 1st April 1991 and 31st December 1992. This recruitment process achieved a sample size of 7159 children. Therefore, this is how the researchers achieved the initial sample size for the study. At the age of 12, the researcher approached the children as a continuity of the study and requested them to wear an Anti-graph that was aimed at collecting information on physical activity. Out of the total sample size, only 6622 of them accepted to wear the gear. Data cleaning on the activity and autorefractor data led to a reduction of the sample size into 4880 children. Therefore, we can affirm that documentation on how the sample size was achieved was effectively done. The description of how statistical methods were used to achieve the reported results was documented. Multivariable regression method was used to describe the relationship between the physical activity characteristics and myopic status. The models were categorized into two showing different levels of controlling for the confounders. This shows how effective the researchers were able to standardize the effect sizes in the model. The multivariable regression technique was also used to describe the difference in effect sizes of the physical characteristics between the myopic groups. There does not seem to be cases of loss of follow-up, hence no documentation. The changes in sample sizes experienced in every stage of the study have been described by giving valid reasons for non-participation. The reasons include failure to consent and data validity. Demographic statistics was clearly provided in the report. Describe the numbers and percentages of myopes in the two groups; best eye and worst eye. In the main results section, a table was provided showing the minimally and maximally confounder estimated results. The results can be compared, hence showing the level of attenuation by the controlled confounders on the predictors. The issue of loss of follow-up was not discussed in the report. With such a huge study, there is a high chance of loss of follow-up. A flow diagram was not used to represent the changes in sample size from the time of recruitment. There was no specific analysis of the follow-up time spent on the participants. There were no reports on counts of participants who were on different categories of exposures such as ethnic categories summaries. Conclusion We can conclude that the reports performed well based on the description of how the sample size was achieved and reporting the results. All the key points that should be noted on these sections were described on the reports. Referees Deere, K., Williams, C., Leary, S., Mattocks, C., Ness, A., Blair, S., Riddoch, C. (2009). Myopia and later physical activity in adolescence: a prospective study. British Journal of Sports Medicine, 43(7), 542-544. https://dx.doi.org/10.1136/bjsm.2008.049288