Li et al reported a nomogram for predicting urinary stress incontinence for a male after endoscopic enucleation of the prostate. This can help to identify a higher risk patient who may benefit from more aggressive management. The authors are from Beijing Friendship Hospital, Capital Medical University and Shanghai Jiaotong University in China.
Patient selection: male after endoscopic enucleation of the prostate
Parameters:
(1) age of the patient in years
(2) body mass index (BMI) in kg per square meter
(3) prostate volume in mL
(4) lower urinary tract symptoms (LUTS) duration
Parameter
Finding
Points
age of the patient
< 65 years
0
65 to 74.99 years
42.7
>= 75 years
82
BMI
< 25 kg per sq m
0
25 to 29.99 kg per sq m
32.9
>= 30 kg per sq m
100
prostate volume
< 75 mL
0
>= 75 mL
63.5
LUTS duration
< 5 years
0
>= 5 years
44.9
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 289.4
• The higher the score the greater the risk of stress urinary incontinence.
value of X =
= (0.01931 * (score)) -3.442
probability of urinary stress incontinence =
= 1 / (1 +EXP((-1) * X))
Performance:
• The area under the ROC curve was 0.76 for the training and 0.78 for the validation cohorts.
To read more or access our algorithms and calculators, please log in or register.
