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Table 5 The Kaplan Meier estimates of mean survival time for women who used Implanon according to different characteristics during five years follow-up in public hospitals of Guraghe zone, southern Ethiopia, 2021

From: Survival time to Implanon discontinuation and its predictors among a cohort of Implanon users who enrolled in public hospitals of southern Ethiopia, 2021: a retrospective cohort study

Variable Categories

Mean survival time in months (95%CI)

Log-rank Estimates

Age of mother in years

  < 20

31.87(29.81,33.94)

χ2 = 21.863

 20–24

29.23(25.88,32.59)

p-value = 0.018

 25–29

33.02(29.97,36.06)

 30–34

28.14(26.44,29.83)

 35+

26.01(23.36,28.66)

Marital status

 In marital union

29.95(28.51,31.39)

χ2 = 0.140

 Not in marital relation

28.2(25.70,30.83)

p-value = 0.018

Residence

 Urban

31.49(29.63,33.34)

χ2 = 7.777

 Rural

27.33(25.58,29.07)

p-value = 0.005

Parity

 0(Nulliparous)

21.67(17.91,25.43)

χ2 = 33.543,

 1(Primiparous)

25.29(23.12,27.46)

p-value< 0.001

 2–4(Multiparous)

32.42(30.22,34.63)

  ≥ 5(Grand multiparous)

30.95(29.09,32.81)

Previous history of receiving ANC

 Yes

30.29(28.78,31.80)

χ2 = 1.508

 No

27.51(24.65,30.36)

p-value = 0.259

Previous history of receiving skilled delivery

 Yes

28.46(28.48,31.63)

χ2 = 0.111

 No

30.06(26.03,30.89)

p-value = 0.739

Contraceptive history

 New

21.16(18.73,23.60)

χ2 = 57.797

 Repeat

31.89(30.28,33.49)

p-value< 0.00

Types of contraceptives previously used

 Implants

31.27(28.63,33.92)

χ2 = 19.199

 Injectable

30.39(28.01,32.78)

p-value = 0.004

 Oral contraceptives

29.51(27.41,31.61)

 IUCD

25.72(21.51,29.93)

 Condom

20.36(16.03,24.69)

Previous history of abortion

 Yes

29.08(26.81,31.35)

χ2 = 0.012

 No

30.47(28.82,32.12)

p-value = 0.914

Having a diagnosed HTN

 Yes

24.91(22.44,27.38)

χ2 = 7.571

 No

30.63(29.14,32.11)

p-value = 0.006

HIV test and counseling offered

 Yes

29.87(28.40,31.34)

χ2 = 0.837

 No

29.63(26.82,32.44)

p-value = 0.360

HIV test performed

 Yes

29.96(28.43,31.49)

χ2 = 0.627

 No

29.48(27.03,31.94)

p-value = 0.428

HIV test result

 Positive

22.27(17.59,26.94)

χ2 = 7.746

 Negative

30.29(28.73,31.87)

p-value = 0.005

Got pre-insertion counseling

 Yes

31.92(30.30,33.54)

χ2 = 47.107

 No

21.56(19.13,24.02)

p-value< 0.001

Service provider

 Midwives

30.08(28.22,31.95)

χ2 = 0.25

p-value = 0.615

 Other health care providers

28.84(27.26,30.42)

Heavy prolonged vaginal bleeding

 Yes

19.32(17.67,20.98)

χ2 = 165.515

p-value< 0.001

 No

34.43(32.68,36.18)

Having post-insertion follow-up insertion

 Yes

35.53(33.76,37.29)

χ2 = 71.293,

p-value< 0.001

 No

25.84(24.36,27.33)