C:\Epi_Info\Training\RiskFactor.htm

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Current View:C:\Epi_Info\Training\Dataset Cholera in Rwenshama.MDB:viewQuestionnaire
Record Count:66(Deleted records excluded) Date:8/16/2004 3:44:42 AM
Analysis of Three Risk Factors
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TABLES Q25Eat Q8Ill


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ILL?
History of eating outside home within past 5 daysYesNoTOTAL
Yes
Row %
Col %
9
90.0
27.3
1
10.0
3.3
10
100.0
15.9
No
Row %
Col %
24
45.3
72.7
29
54.7
96.7
53
100.0
84.1
TOTAL
Row %
Col %
33
52.4
100.0
30
47.6
100.0
63
100.0
100.0

Single Table Analysis

Point 95% Confidence Interval
EstimateLowerUpper
PARAMETERS: Odds-based
Odds Ratio (cross product)10.87501.285192.0297 (T)
Odds Ratio (MLE)10.53741.5714247.8856 (M)
1.3011492.6952 (F)
PARAMETERS: Risk-based
Risk Ratio (RR)1.98751.38532.8514 (T)
Risk Difference (RD%)44.717021.796767.6373 (T)

(T=Taylor series; C=Cornfield; M=Mid-P; F=Fisher Exact)

STATISTICAL TESTSChi-square1-tailed p2-tailed p
Chi square - uncorrected6.7441 0.0094068015
Chi square - Mantel-Haenszel6.6371 0.0099888858
Chi square - corrected (Yates)5.0705 0.0243371186
Mid-p exact 0.0052506927
Fisher exact 0.0097771520



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TABLES Q52Sugar Q8Ill


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ILL?
Sugar caneYesNoTOTAL
Yes
Row %
Col %
25
58.1
75.8
18
41.9
54.5
43
100.0
65.2
No
Row %
Col %
8
34.8
24.2
15
65.2
45.5
23
100.0
34.8
TOTAL
Row %
Col %
33
50.0
100.0
33
50.0
100.0
66
100.0
100.0

Single Table Analysis

Point 95% Confidence Interval
EstimateLowerUpper
PARAMETERS: Odds-based
Odds Ratio (cross product)2.60420.91097.4450 (T)
Odds Ratio (MLE)2.56570.89897.6802 (M)
0.81358.6321 (F)
PARAMETERS: Risk-based
Risk Ratio (RR)1.67150.90423.0899 (T)
Risk Difference (RD%)23.3569-1.062747.7765 (T)

(T=Taylor series; C=Cornfield; M=Mid-P; F=Fisher Exact)

STATISTICAL TESTSChi-square1-tailed p2-tailed p
Chi square - uncorrected3.2700 0.0705600151
Chi square - Mantel-Haenszel3.2204 0.0727258448
Chi square - corrected (Yates)2.4024 0.1211482196
Mid-p exact 0.0394806545
Fisher exact 0.0601392816



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TABLES Q59Boil Q8Ill


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ILL?
How does household prepare its drinking water?YesNoTOTAL
boiling
Row %
Col %
20
43.5
60.6
26
56.5
78.8
46
100.0
69.7
not boiling
Row %
Col %
13
65.0
39.4
7
35.0
21.2
20
100.0
30.3
TOTAL
Row %
Col %
33
50.0
100.0
33
50.0
100.0
66
100.0
100.0

Single Table Analysis

Point 95% Confidence Interval
EstimateLowerUpper
PARAMETERS: Odds-based
Odds Ratio (cross product)0.41420.13951.2297 (T)
Odds Ratio (MLE)0.41990.13391.2455 (M)
0.11801.3845 (F)
PARAMETERS: Risk-based
Risk Ratio (RR)0.66890.42211.0600 (T)
Risk Difference (RD%)-21.5217-46.86373.8202 (T)

(T=Taylor series; C=Cornfield; M=Mid-P; F=Fisher Exact)

STATISTICAL TESTSChi-square1-tailed p2-tailed p
Chi square - uncorrected2.5826 0.1080445119
Chi square - Mantel-Haenszel2.5435 0.1107516099
Chi square - corrected (Yates)1.7935 0.1805039035
Mid-p exact 0.0598120018
Fisher exact 0.0899217415





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