Bhargava et al reported a predictive model for urinary tract infection for urban dwelling adults. The authors are from multiple institutions in India and J-Class Solutions Inc in Danbury, Connecticut.
Parameters from multivariate analysis:
(1) sex
(2) number of times urinating from morning until night
(3) strong desire to urinary that is difficult to hold (urgency)
(4) weakness of urinary stream
(5) splitting or spraying of urinary stream
(6) fever (temperature not specified)
Parameter |
Finding |
Unadjusted Odds Ratio |
Beta Coefficient |
sex |
male |
1 |
0 |
|
female |
2.7 |
0.99 |
urination during day |
<= 7 times |
1 |
0 |
|
8 to 14 times |
2.5 |
0.91 |
|
>= 15 times |
0.04 |
-3.22 |
urgency |
no |
1 |
0 |
|
rarely |
0.9 |
-0.11 |
|
often |
3.6 |
1.28 |
weakness of stream |
no |
1 |
0 |
|
rarely |
0.9 |
-0.11 |
|
often |
5.7 |
1.74 |
splitting or spraying |
no |
1 |
0 |
|
rarely |
4.5 |
1.5 |
|
often |
1.2 |
0.18 |
fever |
no |
1 |
0 |
|
yes |
3.4 |
1.22 |
where:
• "Sometimes" may be preferrable to "rarely".
Interpretation:
• The constant for the logistic regression model was not provided.
• The product of the odds ratios will be used as a measure of risk.
Performance:
• The area under the ROC cures was 0.79.
Specialty: Infectious Diseases