Skip to main content

Table 2 Distribution frequency of normal/CIN1, CIN2, and CIN3 + lesions by method of biopsy, grouped by cervical quadrant location

From: Distribution of cervical intraepithelial neoplasia on the cervix in Chinese women: pooled analysis of 19 population based screening studies

Quadrants

Diagnosis

  

Normal/CIN1

CIN2

CIN3+

Total

  

n

n/Nr(%)

95%CI

n

n/Nr(%)

95%CI

n

n/Nr(%)

95%CI

Nr

Nr/N(%)

Directed biopsy

            
 

Q1

1968

88.1

86.7

89.4

129

5.8

4.9

6.8

136

6.1

5.2

7.1

2233

4.2

 

Q2

1583

83.2

81.5

84.8

167

8.8

7.6

10.1

153

8.0

6.9

9.3

1903

3.6

 

Q3

1548

82.8

81.1

84.5

146

7.8

6.7

9.1

175

9.4

8.1

10.8

1869

3.5

 

Q4

2238

88.4

87.1

90.0

126

5.0

4.2

5.9

169

6.7

5.7

7.7

2533

4.8

P < 0.0001

             

Random biopsy

            
 

Q1

8698

98.2

97.9

98.5

87

1.0

0.8

1.2

72

0.8

0.6

1.0

8857

16.7

 

Q2

8873

97.9

97.6

98.2

106

1.2

1.0

1.4

80

0.9

0.7

1.1

9059

17.1

 

Q3

8717

97.8

97.5

98.1

118

1.3

1.1

1.6

77

0.9

0.7

1.1

8912

16.8

 

Q4

8521

98.2

97.9

98.4

94

1.1

0.9

1.3

65

0.7

0.6

0.9

8680

16.4

P = 0.1911

             

ECC

              
  

8766

96.9

96.6

97.3

101

1.1

0.9

1.4

175

1.9

1.7

2.2

9042

17.0

Total

 

50912

95.9

95.7

96.1

1074

2.0

1.9

2.1

1102

2.1

2.0

2.2

53088

100.0

  1. CIN cervical intraepithelial neoplasia; Q quadrant; ECC endocervical curettage; CI confidence interval