Table 2 Relationships between clinicopathological factors and upper urinary tract recurrence after TURBT in all patients and those with a smoking history.

From: Urinary pH is an independent predictor of upper tract recurrence in non-muscle-invasive bladder cancer patients with a smoking history

 

All Pts

Pts with a smoking history

Univariate

Multivariate

Univariate

Multivariate

HR (95%CI)

P value

HR (95%CI)

P value

HR (95%CI)

P value

HR (95%CI)

P value

Age

 

0.255

   

0.252

  

< 70 years

Ref

   

Ref

   

≥ 70 years

1.43 (0.77–2.63)

   

1.51 (0.70–3.26)

   

Sex

 

0.762

   

0.793

  

Male

Ref

   

Ref

   

Female

1.13 (0.52–2.43)

   

1.21 (0.29–5.13)

   

Smoking history

 

0.632

      

Negative

Ref

       

Positive

1.16 (0.63–2.17)

       

Grade

 

0.379

   

0.435

  

G1–2

Ref

   

Ref

   

G3

1.31 (0.72–2.39)

   

1.35 (0.63–2.89)

   

pT stage

 

0.876

   

0.780

  

Ta

Ref

   

Ref

   

T1

0.95 (0.50–1.82)

   

1.12 (0.50–2.50)

   

Multiple

 

0.219

   

0.798

  

No

Ref

   

Ref

   

Yes

1.47 (0.80–2.70)

   

1.10 (0.52–2.33)

   

Concomitant CIS

 

0.194

   

0.006

 

0.006

No

Ref

   

Ref

 

Ref

 

Yes

1.67 (0.77–3.57)

   

3.33 (1.41–7.69)

 

3.34 (1.41–7.93)

 

Chemotherapy

 

0.189

   

0.288

  

No

Ref

   

Ref

   

Yes

0.26 (0.04–1.92)

   

0.04 (0.00–14.28)

   

BCG

 

0.011

 

0.011

 

0.242

  

No

Ref

 

Ref

 

Ref

   

Yes

0.44 (0.23–0.83)

 

0.43 (0.23–0.83)

 

0.63 (0.29–1.37)

   

Urinary pH level

 

0.072

   

0.008

 

0.008

6.0 or greater

Ref

   

Ref

 

Ref

 

Less than 6

1.79 (0.95–3.33)

   

3.70 (1.41–10.0)

 

3.73 (1.41–9.84)

 
  1. UTUC, upper urinary tract urothelial carcinoma; Pts, Patients; HR, hazard ratio; CI, confidence interval; CIS, carcinoma in situ.