Chi-square test for independence of attributes

Reference no: EM1312789

*Age at first child birth*
	*<20*	*≥35*
*BRCA*	320	220
*Control*	1422	406

To investigate a possible relationship between breast cancer and late child birth a number of women with breast cancer and controls were sampled. Early first birth (<20) was recorded as well as late first birth (≥35).

(a) Test if there is a relationship. In the original investigation there was surely 2368 rows of data representing the women, but if you want to do a test in SPSS you need only 4 rows of data representing the four cells. You need one variable for disease status and one for early/late first child birth. In addition you need a third variable which you may call e.g. COUNT. In this variable you put the numbers of women in each cell. To tell SPSS that you want this interpretation you choose Data followed by Weight Cases and finally you set COUNT as the Frequency Variable. Now you are ready to do the test.

(b) What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?

Reference no: EM1312789

Questions Cloud

Projectile motion : cientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile..

Common size income statement : Prepare a two column common size income statement and Comment specifically on difference between Camper's, Inc., and the industry average.

Evaluation of stock option plan : Throughout this course we have discussed the 'agency problem' - i.e., when the interests of owners and managers are not properly aligned.

How to finding dividend for supernormal growth : How to Finding dividend for Supernormal Growth and dividends are expected to grow at 35 percent per year during next 3 years

Chi-square test for independence of attributes : What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?

Evaluation of salary plan based on incentives : Leisure-Time boats is a manufacturer of mid-to-high end boats with 12 sales territories throughout the U.S. Sales are generated by salespeople in each territory who develop relationships with boating distributors and related retailers.

Purpose stockholders equity section of the balance sheet : Purpose the stockholders equity section of the balance sheet at December 31, 2009. Include a supporting schedule showing your computation of retained earnings at the balance sheet date.

How to finding the price of the bond : How to Finding the price of the bond of the Mangold Corporation has two different bonds currently outstanding

Impact of fiscal stimulus on aggregate demand : Discuss the feasibility of lower middle or low income countries resorting to fiscal stimulus to stave off recessions in their own economies. You can use one or more countries as examples.

User Account

All Pages