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Description

Jiang et al reported a nomogram for predicting a recurrent complicated urinary tract infection (UTI) in a pediatric patient. The authors are from Sichuan University in China.


Patient selection: pediatric patient with a complicated urinary tract infection (UTI)

 

Parameters:

(1) gender

(2) urinary tract surgery

(3) positive urine culture for Escherichia coli

(4) renal dysfunction

(5) vesicoureteral reflux (VUR)

 

Parameter

Finding

Points

gender

male

0

 

female

86.2

urinary tract surgery

no

0

 

yes

85

E. coli positive urine culture

no

0

 

yes

88.3

renal dysfunction

no

0

 

yes

78.2

vesicoureteral reflux

no

0

 

yes

100

 

total score =

= SUM(points for all of the parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 437.7

• The higher the score the greater the risk of recurrent infection.

• A score of 0 is associated with 37% rate of recurrence.

 

value of X =

= (0.0107 * (score)) - 0.5129

 

risk of recurrent complicated UTI =

= 1 / (1 + EXP((-1) * X))

 

Performance:

• The C-index is 0.74 in the training and 0.75 in the validation cohorts.


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