![Page 1: EXCEL’ing at : June 19, 2003 Ruth Sanderson, Epidemiologist](https://reader036.vdocument.in/reader036/viewer/2022062407/56649d385503460f94a11c09/html5/thumbnails/1.jpg)
EXCEL’ing at :
June 19, 2003 Ruth Sanderson, Epidemiologist
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OverviewWhy Innovate?
RRFSS analysis requirements and analysis tools
Overview of AutoCiOutput, Description
Demonstration of AutoCITricks
Conclusions
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Why Innovate?
Needed faster way to comply with Analysis Guidelines:
• Denominator cell size<30 not to be released• Numerator cell size<5 not to be released• Coefficient of Variation >33.3 not to be
released (16.6-33.3 interpret with caution)• Estimates include 95% confidence intervals
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Why Innovate?
Wanted:
Excel graphs with error bars that can be pasted into a Word document for a clean report
Walking Trail Use and Knowledge in past Year by Residence, Middlesex-London Health Unit, 2001-2002
0
10
20
30
40
50
60
70
80
Pe
rce
nt
(%)
Middlesex County 40.6 35.2 24.2
London 58.9 25.7 15.4
Used Know and Not Used Do Not Know
Source: RRFSS , Waves 5-20
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Current Analysis Tools
• SPSS Syntax files or crosstab to get unweighted/ weighted estimates– Does not provide CV, CI or flag small cells
• Confidence Interval Syntax File from P. Holowaty, 1999– Requires transcription of numbers- prone to
human error & labour intensive
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AutoCI - Output Overview
Outputs: 3 Components in Excel Spreadsheet:• Unweighted Table• Weighted Table
– Includes CI, CV and Warnings in Colour
• Excel Bar Graph with Error Bars – Basis for customized Graphs
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AutoCI Overview- OutputUNWEIGHTED VALUES WEIGHTED VALUES
household income40 Total household income40< $40,00040 to < 70,00070 to < 100,000$100,000+ < $40,00040 to < 70,00070 to < 100,000$100,000+
Count 61 42 19 23 145 Yes Count 52 44 22 27% within household income4075.3 85.7 95 92 82.9 % within household income4076.5 88 95.7 93.1
+-95% C.I. 10.1 9 8.3 9.2C.V. 6.7 5.2 4.4 5.1
Count 20 7 1 2 30 No Count 16 6 1 2% within household income4024.7 14.3 5 8 17.1 % within household income4023.5 12 4.3 6.9
+-95% C.I. 10.1 9 8.3 9.2C.V. 21.9 38.3 98.4 68.2
Count 81 49 20 25 175 Total Count 68 50 23 29% within household income40100 100 100 100 100 % within household income40100 100 100 100
Many restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants in your community that have been given this award? * household income40 CrosstabulationMany restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants in your community that have been given this award? * household income40 Crosstabulation household income40 Total household income40
< $40,000 40 to < 70,00070 to < 100,000$100,000+ < $40,000 40 to < 70,00070 to < 100,000$100,000+
[London o
[London only] In the past year, have you eaten at OR ordered take-out food from
arestaurant, icluding family style restaurants as well as cafeteria style and fast
food restaurants?
0
20
40
60
80
100
120
%P
erc
en
t
Yes
No
Yes 76.5 88 95.7 93.1
No 23.5 12 4.3 6.9
< $40,000 40 to < 70,000 70 to < 100,000 $100,000+
Many restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants
in your community that have been given this award?
0
50
100
150
Yes
No
don't know
Yes 13.4 18 8.7 17.2
No 83.6 82 91.3 75.9
don't know 3 0 0 6.9
< $40,00040 to < 70,000
70 to < 100,000
$100,000+
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AutoCI Output WarningsWEIGHTED VALUES
household income40 Total< $40,00040 to < 70,00070 to < 100,000$100,000+
Yes Count 52 44 22 27 145% within household income4076.5 88 95.7 93.1 85.3+-95% C.I. 10.1 9 8.3 9.2 5.3C.V. 6.7 5.2 4.4 5.1 3.2
No Count 16 6 1 2 25% within household income4023.5 12 4.3 6.9 14.7+-95% C.I. 10.1 9 8.3 9.2 5.3C.V. 21.9 38.3 98.4 68.2 18.5
Total Count 68 50 23 29 170% within household income40100 100 100 100 100
Many restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants in your community that have been given this award? * household income40 Crosstabulation household income40 Total
$100,000+ < $40,000 40 to < 70,000 70 to < 100,000 $100,000+Many restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants in your community that have been given this award?Yes Count 9 9 2 5 25
% within household income40 13.4 18 8.7 17.2 14.8+-95% C.I. 8.2 10.6 11.5 13.7 5.4C.V. 31.1 30.2 67.5 40.7 18.5
No Count 56 41 21 22 140% within household income40 83.6 82 91.3 75.9 82.8+-95% C.I. 8.9 10.6 11.5 15.6 5.7
[London only] In the past year, have you eaten at
OR ordered take-out food from arestaurant,
icluding family style restaurants as well as cafeteria style and fast
food restaurants?
Many restaurants have been given an "Award of Excellence", a special designation for exceptional food safety & food handling, .... Are you aware of any restaurants in your community that have been given this award?
0
50
100
150
%P
erc
en
t
Yes
No
don't know
Yes 13.4 18 8.7 17.2
No 83.6 82 91.3 75.9
don't know 3 0 0 6.9
< $40,000 40 to < 70,000 70 to < 100,000 $100,000+
Linked back to unweighted table
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Output Graph & Error Bars[London only] In the past year, have you eaten at OR ordered take-out food from arestaurant,
icluding family style restaurants as well as cafeteria style and fast food restaurants?
0
20
40
60
80
100
120
YesNo
Yes 76.5 88 95.7 93.1
No 23.5 12 4.3 6.9
< $40,000 40 to < 70,000 70 to < 100,000 $100,000+
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Auto CI- How does it Work?
• Run SPSS Syntax File calls on a script file• Script File:
– instructs SPSS to copy and past the unweighted and weighted output tables into Excel
– instructs macro in Excel to run and return to SPSS
• Excel macro calculates CI’s, CV’s, inserts warning colours & creates graph/ error bars
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Auto CI- What do you need to make it Work?
• Software: SPSS, Excel• SPSS file title: test.sps• Excel file titled: autoci.xls• Files by B. Lueske, MLHU
• must have already established/created variable of interest & proper weight variable
Demo
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Conclusions• AutoCi builds on and is dependent on the work of
other RRFSS partners– syntax files, CI calculator, weighting calculations,
analysis requirements
• AutoCI automates analysis requirements– calculating CV’s, CI, small cell count identification
• AutoCi provides quick visual of differences in estimates– Excel bar graph with error bars that can be modified or
pasted into Word documents