Table 1 Descriptive analysis stratified by age, including absolute and relative frequencies and confidence interval of 95% (CI95%)

  ≤ 16 years

20

60.6 (43.6–75.8)

31

45.6 (34.1–57.4)

1

6.7 (0.70–27.2)

  > 16 years

13

39.4 (24.2–56.4)

37

54.4 (42.6–65.9)

14

93.3 (72.8–99.3)

  ≤ 1 delivery

21

63.6 (46.6–78.4)

25

36.8 (26.0–48.6)

4

26.7 (9.7–51.7)

  > 2 deliveries

12

36.4 (21.6–53.4)

43

63.2 (51.4–74.0)

11

73.3 (48.3–90.3)

  ≤ 5 partners

21

63.6 (46.6–78.4)

36

52.9 (41.2–64.5)

11

73.3 (48.3–90.3)

  > 5 partners

12

36.4 (21.6–53.4)

32

47.1 (35.5–58.8)

4

26.7 (9.7–51.7)

 Hormonal

22

66.7 (49.7–80.8)

30

44.1 (32.8–56)

2

13.3 (2.9–36.3)

 Nonhormonal / Does not use it

11

33.3 (19.2–50.3)

38

55.9 (44–67.2)

13

86.7 (63.7–97.1)

 Illiterate / literate

15

45.5 (29.4–62.2)

25

36.8 (26–48.6)

10

66.7 (41.6–86)

 Completed high school / college

18

54.5 (37.8–70.6)

43

63.2 (51.4–74)

5

33.3 (14–58.4)

 Catholic

18

54.5 (37.8–70.6)

46

67.6 (56–77.9)

9

60 (35.3–81.2)

 Non-Catholic

15

45.5 (29.4–62.2)

22

32.4 (22.1–44)

6

40 (18.8–64.7)

 Non-Caucasian

16

48.5 (32.2–65.1)

31

45.6 (34.1–57.4)

5

33.3 (14.0–58.4)

 Caucasian

17

51.5 (34.9–67.8)

37

54.4 (42.6–65.9)

10

66.7 (41.6–86.0)

 No

26

78.8 (62.8–90.0)

47

69.1 (57.5–79.1)

12

80.0 (55.6–94.0)

 Yes

7

21.2 (10–37.2)

21

30.9 (20.9–42.5)

3

20.0 (6.0–44.4)

 No

18

54.5 (37.8–70.6)

47

69.1 (57.5–79.1)

12

80 (55.6–94)

 Yes

15

45.5 (29.4–62.2)

21

30.9 (20.9–42.5)

3

20 (6–44.4)

 No

33

100

68

100

4

26.7 (9.7–51.7)

 Yes

0

–

0

–

11

73.3 (48.3–90.3)