Table 9 |
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|
Comparison of prevalence ratios and respective confidence interval estimates (obtained by unadjusted Poisson/Cox regression, Poisson regression with scale factor adjusted by χ2 and deviance, Poisson/Cox regression with robust variances, log-binomial regression and logistic regression) and odds ratio with confidence interval estimate (obtained by logistic regression) with the Mantel-Haenszel prevalence ratio in the analysis of the original and modified data using mother in a paid job as the outcome, father living with the family as the risk factor and social class as confounder (situation3). |
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|
Original data |
Point estimate |
95% Confidence interval |
||||
|
|
||||||
|
value |
% diff. |
lower |
upper |
width |
% diff. |
|
|
|
||||||
|
PR Mantel-Haenszel |
1.69 |
-- |
1.52 |
1.87 |
0.35 |
-- |
|
PR Poisson/Cox (unadj) |
1.68 |
-0.3% |
1.41 |
2.00 |
0.59 |
68.6% |
|
PR Poisson (χ2) |
1.68 |
-0.3% |
1.49 |
1.90 |
0.41 |
17.2% |
|
PR Poisson (deviance) |
1.68 |
-0.3% |
1.46 |
1.94 |
0.48 |
35.9% |
|
PR Poisson/Cox (robust) |
1.68 |
-0.3% |
1.52 |
1.86 |
0.35 |
-1.5% |
|
PR log-binomial |
1.62 |
-4.0% |
1.47 |
1.78 |
0.32 |
-10.4% |
|
OR logistic regression |
3.75 |
122.6% |
2.72 |
5.17 |
2.45 |
597.6% |
|
|
||||||
|
Modified data |
Point estimate |
95% Confidence interval |
||||
|
|
||||||
|
value |
% diff. |
lower |
upper |
width |
% diff. |
|
|
|
||||||
|
PR Mantel-Haenszel |
1.58 |
-- |
1.39 |
1.79 |
0.40 |
-- |
|
PR Poisson/Cox (unadj) |
1.61 |
2.0% |
1.31 |
1.97 |
0.66 |
63.2% |
|
PR Poisson (χ2) |
1.61 |
2.0% |
1.40 |
1.85 |
0.45 |
10.3% |
|
PR Poisson (deviance) |
1.61 |
2.0% |
1.37 |
1.89 |
0.53 |
31.0% |
|
PR Poisson/Cox (robust) |
1.61 |
2.0% |
1.42 |
1.83 |
0.41 |
2.1% |
|
PR log-binomial |
1.71 |
8.7% |
1.53 |
1.92 |
0.39 |
-4.7% |
|
OR logistic regression |
2.97 |
88.1% |
2.14 |
4.11 |
1.96 |
385.9% |
|
|
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|
Barros and Hirakata BMC Medical Research Methodology 2003 3:21 doi:10.1186/1471-2288-3-21 |
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