Table 6 Bi-variable and multivariable Cox proportional hazard regression for predictors of Implanon discontinuation among women enrolled in Family planning units of public hospitals in Guraghe zone, southern Ethiopia, 2021
Variable Categories | Total [n(%)] | Discontinued [n(%)] | CHR(95%CI) | AHR(95%CI) | p-value |
|---|---|---|---|---|---|
Age of mother in years | |||||
  < 20 | 46(9.2) | 12(5.9) | 1 | 1 | 1 |
 20–24 | 36(7.2) | 15(7.3) | 1.40(0.66,3.00) | 0.84(0.37,1.93) | 0.683 |
 25–29 | 141(28.1) | 45(21.9) | 1.24(0.65,2.34) | 1.01(0.52,1.94) | 0.986 |
 30–34 | 205(40.8) | 94(45.9) | 1.68(0.92,3.07)* | 1.54(0.82,2.89) | 0.178 |
 35+ | 74(14.7) | 39(19.0) | 1.94(1.01,3.71)* | 1.43(0.70,2.90) | 0.325 |
Marital status | |||||
 Not in marital relation | 69(13.7) | 23(11.2) | 1 |  |  |
 In marital union | 433(86.3) | 182(88.8) | 1.08(0.70,1.68) |  |  |
Residence | |||||
 Urban | 295(58.8) | 107(52.2) | 1 | 1 | 1 |
 Rural | 207(41.2) | 98(47.8) | 1.45(1.10,1.91)* | 1.50(1.09.2.08)** | 0.014 |
Parity | |||||
  ≥ 5(Grand multiparous) | 116(23.1) | 36(17.6) | 1 |  |  |
 2–4(Multiparous) | 265(52.8) | 88(42.9) | 1.09(0.74,1.62) | 0.90(0.58,1.40) | 0.639 |
 1(Primiparous) | 92(18.3) | 57(27.8) | 2.01(1.32,3.05)* | 1.51(0.75,2.79) | 0.240 |
 0(Nulliparous) | 29(57.8) | 24(11.7) | 2.89(1.72,4.85)* | 2.02(1.65,3.67) | 0.021 |
Ever got ANC service | |||||
 Yes | 431(85.9) | 171(83.4) | 1 | 1 | 1 |
 No | 71(14.1) | 34(16.6) | 1.25(0.86,1.81) |  |  |
Ever got skilled delivery | |||||
 Yes | 408(81.2) | 162(79.1) | 1 |  |  |
 No | 94(18.7) | 43(20.9) | 1.06(0.75,1.48) |  |  |
Contraceptive history | |||||
 Repeat | 443(88.2) | 163(79.5) | 1 | 1 |  |
 New | 59(11.8) | 42(20.5) | 1.97(1.40,2.77)* | 1.79(0.89,2.96) | 0.061 |
Types of contraceptives previously used (n = 443) | |||||
 Condom | 24(5.4) | 17(9.4) | 1 | 1 |  |
 IUCD | 27(6.1) | 17(9.4) | 0.58(0.29,1.14) | 0.56(0.26,1.21) | 0.141 |
 Oral contraceptives | 98(22.1) | 46(25.4) | 0.37(0.21,0.65)* | 0.58(0.32,1.06) | 0.078 |
 Injectable | 178(40.2) | 71(39.2) | 0.38(0.22,0.64)* | 0.532(0.27,1.05) | 0.069 |
 Implants | 98(22.1) | 30(16.6) | 0.30(0.17,0.55) | 0.47(0.25,0.87)** | 0.016 |
Previous history of abortion | |||||
 No | 414(82.5) | 163(79.5) | 1 | 1 |  |
 Yes | 88(17.5) | 42(20.5) | 1.02(0.72,1.43)* | 1.59(0.83,2.44) |  |
Having a diagnosed HTN | |||||
 No | 432(86.1) | 169(82.4) | 1 | 1 |  |
 Yes | 70(13.9) | 36(17.6) | 1.63(1.14,2.35)* | 1.59(0.93,2.44) | 0.055 |
Counseled before insertion | |||||
 Yes | 441(87.8) | 151(73.7) | 1 | 1 |  |
 No | 61(12.2) | 54(26.3) | 2.73(2.00,3.73)* | 2.4(1.72,3.70)** | 0.021 |
Heavy and prolonged vaginal bleeding | |||||
 No | 388(67.3) | 101(49.3) | 1 | 1 | 1 |
 Yes | 114(22.7) | 104(50.7) | 4.88(3.70,6.44)* | 3.91(2.67,5.32)** | < 0.001 |
Weight gain | |||||
 No | 445(88.6) | 171(83.4) | 1 | 1 |  |
 Yes | 57(11.4) | 34(16.6) | 1.36(0.91,2.05)* | 1.152(0.74,1.885) |  |
Having post-insertion follow up | |||||
 Yes | 219(43.6) | 34(16.6) | 1 | 1 | 1 |
 No | 283(56.4) | 171(83.4) | 4.09(2.83,5.91)* | 3.15(2.11,4.71)* | < 0.001 |