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Table 5 Meta-analysis of odds ratio (OR) for cancer-specific survival (CSS)

From: Bladder preservation approach versus radical cystectomy for high-grade non-muscle-invasive bladder cancer: a meta-analysis of cohort studies

CSS

Factors

Study size

OR (95%CI, P value)

I2 (%)

2-yr

All included studies

6

0.78(0.33–1.81,0.56)

73

Original tumor state

HG

2

1.09(0.15–8.15,0.93)

92

G3

4

0.63(0.25–1.60,0.33)

48

Radical cystectomy timing

> 3 months

1

3.13(1.25–7.86,0.02)

not available

< 3 months

4

0.59(0.26–1.32,0.2)

56

Bladder preservation modality

BCG

4

0.63(0.25–1.60,0.33)

48

Mix

2

1.09(0.15–8.15,0.93)

92

Age

< 65 years old

2

1.12(0.52–2.41,0.77)

0

> 65 years old

4

0.60(0.18–1.98,0.4)

82

5-yr

All included studies

9

0.78(0.44–1.38,0.4)

75

Original tumor state

HG

3

1.37(0.40–4.67,0.62)

84

G3

6

0.59(0.30–1.16,0.13)

70

Radical cystectomy timing

> 3 months

2

0.89(.06–2.87,0.93)

92

< 3 months

5

0.91(0.52–1.58,0.73)

49

Bladder preservation modality

BCG

5

0.70(0.35–1.41,0.32)

65

Mix

4

0.91(0.31–2.71,0.87)

85

Age

< 65 years old

3

0.74(0.19–2.83,0.66)

76

> 65 years old

6

0.78(0.39–1.55,0.47)

77

10-yr

All included studies

5

1.22(0.59–2.52,0.6)

80

Original tumor state

HG

1

3.04(1.53–6.05,0.002)

not available

G3

4

0.96(0.45–2.03,0.91)

76

Radical cystectomy timing

> 3 months

1

3.04(1.53–6.05,0.002)

not available

< 3 months

3

1.51(0.97–2.34,0.07)

48

Bladder preservation modality

BCG

4

0.96(0.45–2.03,0.91)

76

Mix

1

3.04(1.53–6.05,0.002)

not available

Age

< 65 years old

2

1.22(0.35–4.24,0.75)

70

> 65 years old

3

1.22(0.41–3.65,0.73)

87

15-yr

All included studies

3

2.19(1.21–3.95,0.009)

55