Basic Allied Health Statistics And Analysis - 4

Front 1

Fraction:

Back 1

A fragment or part of a whole; small part; bit.

Front 2

Numerator:

Back 2

The top number (number above the line) of a fraction.

Front 3

Denominator:

Back 3

The bottom number (number below the line) of a fraction

Front 4

Quotient:

Back 4

The number resulting from division of one number by another. With fractions, the quotient is obtained by dividing the numerator by the denominator.

Front 5

Decimal:

Back 5

An amount less than 1.

Front 6

What is the decimal of 6/60?

= 6 divided by 60 =

Back 6

0.1

Front 7

What is the decimal of 4/1000?

4 divided by 1000 =

Back 7

0.004

Front 8

Percentage:

Back 8

The number of times something happens out of every one hundred times

Front 9

A total of 125 mammograms were performed in February, of which 25 were reported to show some type of abnormality. Therefore, what percentage showed an abnormality?

Back 9

25/125 = 0.20 or 20%

25 divided by 125 = .20

.20 x 100 = 20

add % sign to answer =

20%

Front 10

Rate:

Back 10

- has many meanings. It can mean a value or price (as in 50 cents a pound); itcan be a unit of something (as in the rate of speed is 30 mph, or the birthrate is 20 birthsper every 100 teenagers, or the interest rate is 8.6%).

It is also a ratio, proportion, orrank.

Most commonly it is expressed as a percentage.

Front 11

Ratio:

Back 11

A relationship between things or of one thing to another thing; it is also a rate or proportion. It is generally expressed as a fraction (for example, 8/10 or 4/5).

All rules that apply to fractions apply equally to ______.

______ are also written with the numbers side-by-side and separated by a colon (8:10 or 4:5. The following are equivalent: 8/10; 4/5.

Front 12

Proportion:

Back 12

A relationship of one portion to another or to the whole, or of one thing to another.

A __________ is a ratio.

Front 13

Average:

Back 13

A number that typifies a set of numbers of which it is a function.

Front 14

Formula to Compute an Average:

Back 14

Add (summate) all scores in a distribution and divide by the number of scores in the distribution.

∑ (Sum) of all scores / divided by number of scores in the distribution)

Front 15

Why Round?

Back 15

When working with data, the result does not always compute to a whole number.

•Approximates a total or final number

•Primaryreason is to arrive at a usable number

Front 16

When to Increase or Round-up.

Back 16

If the last digit is five or greater, the preceding number should be increased one digit. If the last digit is less than five, the number remains the same.

Front 17

Fraction to Percentage Formula:

Back 17

•Toconvert a fraction to a percentage, divide the numerator by the denominator andmultiply by 100 and add a percent sign.

•Example:

–Tochange the fraction 60/80 to a percentage•Divide60 by 80

•Multiplyquotient by 100

•Add apercent sign

(60divided by 80) = 0.75 x 100= 75%

Front 18

Convert 60/80 to a percentage -

Back 18

divide 60 by 80, and then multiply the quotient by 100, which equals 75%

[(60 ÷ 80) × 100 = 75]

Front 19

Ratio to Percentage:

Back 19

Formula: 1stConvert ratio to fraction.

1:8 = 1/8.

One out of eight nurses indicated that he or she had worked a double shift the previous month. Divide 1 by 8,and then multiply the quotient by 100, which gives 12.5%, or 13% when rounded up

[(1 ÷ 8) × 100 =12.5].

Front 20

Decimal to Percentage:

Back 20

Formula: Move decimal point two places to the right of the decimal point and add the percent sign.

Example: To convert 0.50 to a percentage, the decimal point is moved two places to the right (from 0.50 to 50.) and the number is followed by a percent sign (50%).

Front 21

Percentage to Decimal:

Back 21

Formula: Cross out the percent sign and move the decimal point two places to the left of the decimal point.

Example: To convert 65% to a decimal, eliminate the percent sign and move the decimal point from 65. to .65.

Front 22

Percentage to Fraction:

Back 22

Formula: Cross out percent sign and place the entire number (percentage) in the numerator and place 100 in the denominator.

Example: To change 55% to a fraction, eliminate the sign and place 55 in the numerator and 100 in the denominator.

(55/100)

Convert to the lowest fraction

(55 divided by 5 = 11

100 divided by 5 = 20

answer is 11/20)

Front 23

COMPUTING WITH A PERCENTAGE

Back 23

When computing with a percentage, the percentage is converted to a decimal, and used in that form.

Formula: Change percentage to decimal and multiply by (total number in the distribution).

Example: If 60% of all patients admitted to the hospital have a blood glucose test, how many patients were administered a blood glucose test in the past year, out of 6000 admissions? Convert 60% to 0.60 and multiply by 6000 = 3600 patients.

Front 24

COMPUTING WITH A PERCENTAGE

Back 24

A hospital has 80% of its 120 beds filled. To find how many empty beds are present,change

80% to 0.80 x number of beds

(120 × 0.8 = 96 beds)

subtractfrom 120 (120 – 96 = 24). Alternatively, it can be said that if 80% of the beds are filled,20% are empty.

This 20% number can also be used for the computation

(0.20 × 120 = 24empty beds)

Front 25

How to Convert a Percent to Decimal:

Back 25

Calculating the conversion from percents to decimals is done with division.

Converting from a percent to a decimal is done by dividing the percentage value by 100.

For example:

-10% is 10 divided by 100 = 0.10

-67.5% is 67.5 divided by 100 = 0.675

Note that the short way to convert from a percentage to a decimal is by removing the percentage sign and moving the decimal point 2 places to the left.

Front 26

How to show a decimal as a percentage:

Back 26

Multiply by 100.

0.156 becomes 0.156 x 100 = 15.6%

Front 27

A fraction is a part of a whole written as one number over another number.

The numeratoris the top number;

Back 27

the denominator is the bottom number. The quotient is obtained by dividing the top number by the bottom number.

Front 28

A decimal is an amount less than one and is preceded by a decimal point;

•Adecimal is an amount less than one

–1/10= 0.10

–1/100= 0.01

–1/1000= 0.001

A decimal is also -

Back 28

the fractional amount obtained by dividing the numerator by the denominator of a fraction.

-1 divided by 10 = 0.10 (1/10)

-1 divided by 100 = 0.01 (1/100)

-1 divided by 1000 = 0.001 (1/1000)

Front 29

A percentage is a decimal multiplied by 100;

Back 29

the percentage number is followed by a percent sign.

-0.10 x 100 = 10%

-0.01 x 100 = 1%

-0.001 x 100 = 0.1%

Front 30

A rate is a quantity measured with respect to another measured quantity; it is often defined as the number of times something happens divided by the number of times it could happen.

How is a rate most commonly expressed?

Back 30

As a percentage.

Front 31

A ratio (also known as a proportion) is

Back 31

the relationship between items or to other items and is generally expressed as a fraction.

Front 32

An average is a measure of central tendency obtained by

Back 32

totaling the scores and dividing the total by the number of scores in the distribution.

Front 33

Computations can be converted from one form to another—

Back 33

fraction, ratio, or decimal to percentage; percentage to fraction or decimal.

Front 34

When computing with percentages,

Back 34

the percent is converted to a fraction or decimal before proceeding with the computation.

Front 35

•Quotient

Back 35

–When the numerator is divided by the denominator to convert the fraction into a decimal

-2/3

2 is the (numerator) (also called dividend)

3 is the (denominator) (also called divisor)

Front 36

•Fractions should be reduced to their lowest form by dividing both the numerator and denominator by a common number, divisible by both.

Back 36

5/10 can be reduced by dividing both by 5, which = 1/2.

Front 37

Ratios:

Back 37

are also written with the numbers side-by-side and separated by a colon.

Example: Seven out of ten people admitted to the hospital are found to be over 50 years of age.

This _____ could be written as 7/10 or 7:10.

Front 38

One hundred operations were performed this past month. If 20 of these were orthopedic procedures, 12 were gynecological, 18 were ophthalmological, 22 were urological, and the remainder were general surgeries, what was the ratio for each surgical category?

Back 38

20/100 Orthopedic

12/100 GYN

18/100 Ophthalmological

22/100 Urological

28/100 General

Front 39

Proportion:

Back 39

A relationship of one __________ to another or to the whole, or of one thing to another.

A __________ is a ratio.

Front 40

The newborn nursery reports that 120 infants were born at the hospital during the month of May.

Five of these infants died shortly after birth and the rest were discharged.

What is the newborn death rate?

Back 40

5/120 or 4%

5 divided by 120 = 0.04

0.04 x 100 = 4%

Front 41

Converting a Ratio to Percentage

Back 41

•To convert a ratio to percentage, writethe ratio as a fraction

–Dividethe fraction

–Multiplythe quotient by 100

–Adda percent sign

•Example:

–Tochange the ratio 1:8 to a percentage•Divide1 by 8

•Multiplyquotient by 100

•Adda percent sign

(1 divided by 8) = 0.125 x 100 = 12.5%

Front 42

Converting Decimal to Percentage

Back 42

•Toconvert a decimal to a percentage, simply multiply by 100 (which moves thedecimal point two places to the right) and add a percent sign. •Example

–Toconvert 0.50 to a percentage

•Multiply0.50 by 100

•Add apercent sign

(0.50 x 100) = 50%

Front 43

Converting Percentage to Decimal

Back 43

•Toconvert from a percentage to a decimal, cross out the percent sign and move thedecimal point two places to the left of the decimal point or divide by 100

•Example

–Toconvert 65% to a decimal

•Eliminatethe percent sign

•Movethe decimal 2 places to the left or divide by 100

(65 ÷ 100) = 0.65

Front 44

Converting to Other Units of Measure

Back 44

•Itmay be necessary to convert data from U.S. standards of measure to metric unitsor vice versa.

•Inanalyzing data, it is important that data be reported in the same units.

Front 45

•Linear measures:

Back 45

1 cm= 0.0328 foot; 0.3937 inch

1 inch = 2.54 cm

1 foot = 0.3048 meter

1 meter = 1.0936 yd; 3.2808 feet; 39.37 inches 1 mile = 1.6094 km

1 km = 0.6214 miles

Front 46

Weight measures:

Back 46

1 gm = 0.0022 lb;0.0353 oz

1 kg = 2.2046 lb

1 lb =0.4536 kg; 45.36 gm

1 oz =28.3495 gm

Front 47

Liquid weight measures:

Back 47

1 quart = 0.94633 liter

1 liter = 0.2642 gallons; 1.0567 quarts

Front 48

HIM Computational Applications

Back 48

•Salaryand Staffing Calculations

•FilingSpace

•Equipment

•Productivity

•BudgetVariance

Front 49

Rounding is a common practice and specifies the number of places to which the computation should be carried out beyond the decimal point, and

Back 49

rounding up if the final number is 5 or more.

Front 50

Rounding Data Rule

Back 50

•“Carriedto” is the term used to indicate what decimal place or whole number thequotient is to be determined, in order to round the data to the specifiednumber.

Front 51

Rounding Data Rule

Back 51

•If itis stated that the answer is to be correct to two decimal places, the quotientshould be carried out to at least three places.

Front 52

Rounding Data Rule

Back 52

•Ifthe answer is to be correct to the nearest whole number, the answer must becarried to one decimal place.

Front 53

Rounding Data Rule

Back 53

•“Correctedto” is the term used to indicate the degree to which the answer should bespecified. Seldom will data be specified beyond one or two decimal places.