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Table 6 Meta-analysis of odds ratio (OR) for progression-free survival (PFS)

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

PFS

Factors

Study size

OR (95%CI, P value)

I2 (%)

2-yr

All included studies

3

0.51(0.24–1.07,0.08)

0

Radical cystectomy timing

> 3 months

1

0.45(0.12–1.64,0.23)

not available

< 3 months

2

0.54(0.22–1.34,0.18)

0

5-yr

All included studies

4

1.17(0.75–1.82,0.49)

46

Radical cystectomy timing

> 3 months

1

0.38(0.11–1.32,0.13)

not available

< 3 months

3

1.37(0.85–2.21,0.2)

0

Age

< 65 years old

3

1.03(0.40–2.63,0.95)

58

> 65 years old

1

0.83(0.33–2.06,0.69)

not available

10-yr

All included studies

3

0.80(0.30–2.14,0.66)

54

Radical cystectomy timing

> 3 months

1

0.28(0.08–0.98,0.05)

not available

< 3 months

2

1.31(0.62–2.76,0.48)

0

Age

< 65 years old

2

0.56(0.14–2.26,0.41)

56

> 65 years old

1

1.36(0.56–3.33,0.49)

not available

15-yr

All included studies

2

1.07(0.08–13.68,0.96)

91