Assignment: Handle Binary Outcome

Want create site? With you can do it easy.

Assignment: Handle Binary Outcome

Assignment: Handle Binary Outcome

Permalink:  ‎

Don't use plagiarized sources. Get Your Custom Essay on
Assignment: Handle Binary Outcome
From $10/Page
Order Essay

Objective: Using Logistic Regression to handle a binary outcome. Given the prostate cancer dataset, in which biopsy results are given for 97 men: • You are to predict tumor spread in this dataset of 97 men who had undergone a biopsy. • The measures to be used for prediction are: age, lbph, lcp, gleason, and lpsa. This implies that binary dependent variable of lcavol will be the outcome variable. We start by loading the appropriate libraries in R: ROCR, ggplot2, and aod packages as follows: > install.packages(“ROCR”) > install.packages(“ggplot2”) > install.packages(“aod”) > library(ROCR) > library(ggplot2) > library(aod) Next, we load the csv file and check the statistical properties of the csv File as follow: > setwd(“C:/RData”) # your working directory > tumor <- read.csv(“prostate.csv”) # loading the file > str(tumor) # check the properties of the file . . . continue from here! Reference R Documentation (2016). Prostate cancer data. Retrieved from

Aims The analysis of randomized controlled trials with incomplete binary outcome data is challenging. We develop
a general method for exploring the impact of missing data in such trials, with a focus on abstinence outcomes.
Design We propose a sensitivity analysis where standard analyses, which could include ‘missing = smoking’ and ‘last
observation carried forward’, are embedded in a wider class of models. Setting We apply our general method to data
from two smoking cessation trials. Participants A total of 489 and 1758 participants from two smoking cessation
trials. Measurements The abstinence outcomes were obtained using telephone interviews. Findings The estimated
intervention effects from both trials depend on the sensitivity parameters used. The findings differ considerably in
magnitude and statistical significance under quite extreme assumptions about the missing data, but are reasonably
consistent under more moderate assumptions. Conclusions A new method for undertaking sensitivity analyses when
handling missing data in trials with binary outcomes allows a wide range of assumptions about the missing data to be
assessed. In two smoking cessation trials the results were insensitive to all but extreme assumptions.
Keywords Last observation carried forward, missing data, missing not at random, Russell Standard, sensitivity
analysis, smoking cessation trials.
Correspondence to: Dan Jackson, MRC Biostatistics Unit, Institute of Public Health, University Forvie Site, Robinson Way, Cambridge CB2 0SR, UK.
Submitted 29 April 2013; initial review completed 11 November 2013; final version accepted 14 August 2014
Missing outcome data are a common problem in
randomized controlled trials. In this paper we focus on
trials where the end-point of interest is a single binary
outcome. Binary outcome measures are widely used in
trials for smoking, alcohol and drug misuse where the
treatment goal is abstinence [1–4].
In smoking cessation trials, participants who do not
report their smoking status at follow-up are often
assumed to be smoking [5–8], and the Russell Standard
[9,10] requires this. Because smoking cessation trials
have this standard approach for handling missing
outcome data, we use smoking as our example and incorporate the Russell Standard into our methods. However,
our method is applicable to all trial areas where binary
outcome data are collected; for example, Maisel et al. [2]
found that most studies in their meta-analysis of treatments for alcohol-use disorders considered dropouts to
have relapsed. Based on an informal review, w

Did you find apk for android? You can find new and apps.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
*Price with a welcome 20% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with My Course Writer
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
See why 10k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Excellent writing !! Definitely I will use your services again... Thank you.
Customer 452487, August 22nd, 2021
Excellent job! super recommended.
Customer 452487, August 24th, 2021
Thank you so much! I appreciate what you do and all of the great help you've given me!
Customer 452483, September 6th, 2021
Good job! Thank you.
Customer 452487, October 26th, 2021
Thank you for all of your help and hard work, truly appreciate you guys always being there with my hectic schedule. Thank you again!
Customer 452483, September 20th, 2021
English 101
Amazing thank you!
Customer 452615, August 1st, 2022
Business and administrative studies
Great produce and on time!
Customer 452561, November 8th, 2022
English 101
Perfect! Thank you so much for all of your hard work and help! Appreciate it!!
Customer 452483, August 30th, 2021
Thank you! It was great :)
Customer 452483, July 26th, 2021
English 101
Customer 452547, March 22nd, 2022
Thank you for your hard work; I enjoyed reading the essay and appreciate your writing.
Customer 452483, July 18th, 2021
Well done! I thank you very much!
Customer 452483, July 9th, 2021
Customer reviews in total
Current satisfaction rate
2 pages
Average paper length
Customers referred by a friend
20% OFF your first order
Use a coupon 20OFF and enjoy expert help with any task at the most affordable price.
Claim my 20% OFF Order in Chat