Applied Biostatistics for the Health Sciences. Richard J. Rossi

Скачать книгу

of breast cancer 1 = Yes 6 “Has anyone taught you how to 0 = No BSE examine your own breasts: that is BSE” 1 = Yes 7 “How likely is it that a mammogram 1 = Not likely DETC could find a new case of 2 = Somewhat likely breast cancer” 3 = Very likely

      1.4.7 Benign Breast Disease Study

The Benign Breast Disease Study data set consists of data collected from 200 women in a case–control study designed to investigate the risk factors associated with benign breast disease at two hospitals in New Haven, Connecticut. The variables included in this data set are summarized in Table 1.7.

Table 1.7 A Description of the Variables in the Benign Breast Disease Study Data Set

Variable	Description	Codes/Values	Name
1	Stratum	1–50	STR
2	Observation within a stratum	1 = Case	OBS
		2–4 = Control
3	Age of the subject at	Years	AGMT
	the interview
4	Final diagnosis	1 = Case	FNDX
		0 = Control
5	Highest grade in school		HIGD
6	Degree	0 = None	DEG
		1 = High school
		2 = Jr. college
		3 = College
		4 = Masters
		5 = Doctoral
7	Regular medical checkups	1 = Yes	CHK
		2 = No
8	Age at first pregnancy	Years	AGP1
9	Age at menarche	Years	AGMN
10	No. of stillbirths, miscarriages, etc.		NLV
11	Number of live births		LIV
12	Weight of the subject	Pounds	WT
13	Age at last menstrual period	Years	AGLP
14	Marital status	1 = Married	MST
		2 = Divorced
		3 = Separated
		4 = Widowed
		5 = Never married

1.4.8 Exerbike Data Sets

The Exerbike and Exerbike2 data sets consist of data collected on an individual’s exercise bike records. The variables in the Exerbike data set are summarized in Table 1.8, and the variables in the Exerbike2 data set are summarized in Table 1.9.

Table 1.8 A Description of the Variables in the Exerbike Data Set

Variable	Description	Codes/Values	Name
1	Date of exercise session	mm/dd/yyyy	Date
2	Calories burned	Calories Скачать книгу В начало < 19 20 21 22 23 24 25 26 27 28 > В конец e-mail: [email protected]