Table 3 Spatial distribution characteristics of lPCa group and cPCa group

Index tumor lesion

Anterior

12

P = 0.670

63

P = 0.221

0.993 (0.393–2.508)

P = 0.989

Posterior

10

50

Both anterior and posterior

2

13

–

Peripheral zone

19

P = 0.002

82

P < 0.001

0.774 (0.221–2.707)

P = 0.688

Transitional zone

4

15

Both peripheral zone transitional zone

1

29

–

Apical 1/3

12

P = 0.040

111

P = 0.042

–

Middle 1/3

16

111

0.749 (0.339–1.656)

P = 0.475

Basal 1/3

5

84

1.819 (0.617–5.365)

P = 0.278

Total tumor lesion

Anterior

23

P = 0.435

206

P = 0.843

1.247 (0.653–2.382)

P = 0.504

Posterior

18

202

Both anterior and posterior

4

21

-

Peripheral zone

36

P < 0.001

350

P < 0.001

0.754 (0.316–1.798)

P = 0.524

Transitional zone

7

50

Both peripheral zone transitional zone

2

29

–

Apical 1/3

22

P = 0.004

285

P = 0.004

Middle 1/3

28

234

0.655 (0.364–1.177)

P = 0.157

Basal 1/3

8

165

1.616 (0.702–3.717)

P = 0.259