Table 1: Demographic and clinical characteristics of the study population.

 

　

n = 491 (%)

Age

Median (range)

< 50

 

38.0 (17-58)

464 (94.5)

 

≥ 50

 

27 (0.5)

Gravida

0

 

99 (20.2)

 

≥ 1

 

381 (77.6)

 

Not available

 

11 (2.2)

Parity

0

 

142 (28.9)

 

≥ 1

 

342 (69.7)

 

Not available

 

7 (1.4)

Menstrual cycle

Regular

 

343 (69.9)

 

Irregular

 

109 (22.2)

 

Not available

 

39 (7.9)

Post-partuma)

Yes

 

2 (0.4)

 

No

 

489 (99.6)

BMI

< 25

 

420 (85.5)

 

≥ 25

 

70 (14.3)

 

Not available

 

1 (0.2)

Histologyb)

CIN ≤ 2

 

62 (12.6)

 

CIN3

 

385 (78.4)

 

AIS

 

11 (2.2)

 

CIN3 + AIS

 

4 (0.8)

 

Microinvasive or invasive SCC

 

25 (5.1)

　

Others

 

4 (0.8)

Depth of conization

< 15

 

237 (48.3)

(mm)

≥ 15

 

251 (51.1)

 

Not available

 

3 (0.6)

Catheter insertion

Yes

 

394 (80.2)

 

 

French catheter scale

12Fr.

18 (3.7)

 

 

   

14Fr.

201 (40.9)

 

 

 

16Fr.

141 (28.7)

 

 

 

Not available

34 (6.9)

 

No

 

94 (19.2)

 

Not available

 

3 (0.6)

 

 

 

 

 Cervical stenosis

Yes

 

80 (16.3)

 

 

Partial obstruction

Menstrual abnormality

47 (9.6)

 

 

Dysmenorrhea

18 (3.7)

 

 

Hematometra

2 (0.4)

 

 

Complete obstruction

 

13 (2.6)

 

No

 

411 (83.7)

BMI: body mass index; CIN: cervical intraepithelial neoplasia; AIS: adenocarcinoma in situ; SCC: squamous cell carcinoma.

a): within 8 weeks of delivery; b): postoperative diagnosis.