Characteristics of subjects measured at the beginning

Assignment Help Basic Statistics
Reference no: EM131028497

An epidemiologist says that "randomization does not exclude confounding . . . confounding is very likely if information is collected-as it should be-on a sufficient number of baseline characteristics. . . ." Do you agree or disagree? Discuss briefly. Notes. "Baseline characteristics" are characteristics of subjects measured at the beginning of the study, i.e., just before randomization. The quote, slightly edited, is from Victora et al (2004).

Reference no: EM131028497

Questions Cloud

Which element emits photons of highest energy : Which element emits photons of highest energy? Of lowest energy? When burned, a sample of an unknown substance is found to emit light of frequency . 6.59 X 1014 s-1 Which of these elements is probably in the sample?
Can this action be extended to make m into a q-module : Can this action be extended to make M into a Q-module?
Powerful tool for deciding : An investigator writes, "Statistical tests are a powerful tool for deciding whether effects are large." Do you agree or disagree? Discuss briefly.
Prove that p intersect h is the unique sylow p-subgroup : Let P be in Syl_p(G) and assume N is a normal subgroup of G. Use the conjugacy part of Sylow's theorem to prove that P intesect N is a Sylow p-subgroup of N. Deduce that PN/N is a Sylow p-subgroup of G/n
Characteristics of subjects measured at the beginning : Do you agree or disagree? Discuss briefly. Notes. "Baseline characteristics" are characteristics of subjects measured at the beginning of the study, i.e., just before randomization. The quote, slightly edited, is from Victora et al (2004).
What changes be made to move practice closer to compliance : Assess the practice's organization. Where is it most likely HIPAAcompliant? What changes should be made to move the practice closer to compliance?
What is the value of the degrees of freedom : What is the observed or computed value of t? What is the value of the degrees of freedom that are reported in the output? What is the reported level of significance from the T Test for Dependent Means
Briefly describe the pigeon hole principle : Prove that if G is a finite group, H subset of G that is closed with respect to the operation of G, Then every element of H has its inverse in H.
Compare the directional characteristics of the and orbitals : In what sense does a 2p orbital have directional character? Compare the "directional" characteristics of the and orbitals. (That is, in what direction or region of space is the electron density concentrated?)

Reviews

Write a Review

Basic Statistics Questions & Answers

  Suppose a loaf of bread cost 100 in 1984 and 180 in 2004

suppose a loaf of bread cost 1.00 in 1984 and 1.80 in 2004. what is the bread price index in 2004 using 1984 as the

  Probability of making a two point

For a portion of the 2004 season, the shooting records of the 29 teams in the NBA showed the probability of scoring two points by making a field goal was .44, and probability of scoring three points by making a three point shot was 0.34. I

  Estimate the probability that a driver selected at random

a car company conducted a study to understand the relationship between age groups and drivers primary vehicles. their

  Business problem

Your task is to identify a business problem which can be solved by one of the following techniques: Decision theory, regression, forecasting, inventory and linear programming.

  Problem regarding the orthogonal matrix

If Q is an orthogonal matrix, so that QTQ = I, prove that det Q equals +1 or -1. What kind of parallelepiped is formed from the rows (or columns) of an orthogonal matrix Q?

  Comparing three treatment conditions

The following data were obtained from an independent measures research study comparing three treatment conditions. Use an ANOVA with alpha=.05 to determine whether there are any significant mean differences among the treatments.

  The us post office is interested in estimating the mean

the u.s. post office is interested in estimating the mean weight of packages shipped using the overnight service. they

  Relationship between caffeine consumption

A researcher is interested in the relationship between caffeine consumption and activity level for elementary school children. A sample of 20 children is obtained and the children are separated into two roughly equivalent groups.

  Batter walks on the fourth pitch

In a Little League baseball game, team A s pitcher throws a strike 50% of the time and a ball 50% of the time, successive pitches are independent of one another, and the pitcher never hits a batter. Knowing this, team B s manager has instructed th..

  Calculate a .95 confidence interval for the data

Is this hardware retailer's sales significantly different from all retailers in the chain at p= .05? Are they significantly different at p= .01? Calculate a .95 confidence interval for the data in problem.

  1an experiment compares yields for six different types of

1.an experiment compares yields for six different types of alfalfa. each type was planted in four different plots. the

  What is the level of measurement for temperature

The Gallup organization contracts 2871 male university graduates who have a white collar job and asks whether or not they had received a raise at work during the past 4 months. What is the population of the study?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd