Chapter 10

Question 1

difference between the true measure and what is actually measured

Answer 1

measurement error

Question 2

the variation in measurement is in the same direction

Answer 2

systematic error

Question 3

a BP cuff off by 6mmHg is what type of error

Answer 3

systematic

Question 4

the difference in measurement is without pattern

Answer 4

random error

Question 5

what is the lowest level of measurement

Answer 5

nominal

Question 6

measurement - categories that are not more or less, but different from one another; mutually exclusive

Answer 6

nominal scale

Question 7

measurement - gender, smoke, chest pain?

Answer 7

nominal

Question 8

measurement - order/ranking imposed on categories; numbers are not mathematically relevant but preserve order

Answer 8

ordinal scale

Question 9

measurement - pain scale, BMI, freshman = 1, etc.

Answer 9

ordinal scale

Question 10

measurement - numerical distances between intervals; math is meaningful, no absolute zero

Answer 10

interval scale

Question 11

measurement - distance between 99 and 98 degrees = distance between 98 and 97 degrees

Answer 11

interval scale

Question 12

highest form of measurement

Answer 12

ratio scale

Question 13

measurement - continuous values, has absolute zero

Answer 13

ratio scale

Question 14

measurement - HR, RR, # cig/day

Answer 14

ratio scale

Question 15

what is the lowest acceptable coefficient for a well developed measurement tool

Answer 15

0.80

Question 16

concerned with the consistency of repeated measures or test-retest reliability

Answer 16

stability

Question 17

focused on comparing 2 versions of the same instrument or 2 observes measuring the same event

Answer 17

equivalence

Question 18

all items in the instrument should consistently measure the construct; strong r

Answer 18

internal consistency

Question 19

the extent to which an instrument reflects the concept being examined

Answer 19

validity

Question 20

“true positive”

Answer 20

sensitivity

Question 21

high sensitivity, test is negative, r/o the disease

Answer 21

SnNout

Question 22

“true negative”

Answer 22

specificity

Question 23

high specificity, test is positive, rules IN the disease

Answer 23

SpPin

Question 24

interview - uses broad questions

Answer 24

unstructured

Question 25

interview - closed ended questions

Answer 25

structured

Question 26

focus groups are used to study what kind of issues

Answer 26

qualitative

Question 27

scale that determines opinions

Answer 27

likert scale

Question 28

scale that measures magnitude/intensity

Answer 28

visual analog