Kim et al evaluated adult men with prostatic calculi identified on ultrasonography. They identified risk factors for lower urinary tract symptoms (LUTS). The authors are from Soonchunhyang University in Seoul.
Patient selection: adult males aged 40 to 59 years of age
Outcome: IPSS >= 8
Parameters:
(1) age
(2) body mass index
(3) type of prostatic calculi
|
Calculi Types |
Features |
|
Type A |
discrete, small, usually present diffusely throughout |
|
Type B |
large masses with multiple echoes, coarse, usually posterior to the urethra in linear pattern at the junction with periurethral adenomatous tissue, situated in prostatic ducts |
|
Parameter |
Finding |
OR |
|
age in years |
<= 50 years of age |
1 |
|
|
> 50 years of age |
1.3 |
|
body mass index |
<= 25 kg per square meter |
1 |
|
|
> 25 kg per square meter |
1.2 |
|
type of prosatic calculi |
none |
1 |
|
|
type A (small) |
1 |
|
|
type B (large and coarse) |
1.8 |
where:
• None of the odds ratios are very high, with type of calculus the highest.
cumulative product of odds ratios =
= PRODUCT(OR for each risk factor)
Interpretation:
• minimum cumulative product: 1
• maximum cumulative product: 2.8
• The risk for LUTS increased with the number of risk factors present.
Specialty: Urology, Infectious Diseases
ICD-10: ,
