Factors that influence the choice of long-acting reversible contraceptive use among adolescents post-abortion in Chongqing, China: a cross-sectional study

Figures & data

Table 1. The choices of contraceptive methods based on PAC [samples (%)].

Contraceptive method	Cu-IUDs	LING-IUS	Subcutaneous Implants	COC	Condoms	Safe period	Extracorporeal sperm drainage	None
Before PAC	0	0	0	0	103(18.56)	127(22.88)	82(14.78)	243(43.78)
After PAC	67(12.07)	9(1.62)	17(3.07)	462(83.25)	0	0	0	0

PAC: post-abortion care; Cu-IUDs: copper intrauterine devices; LING-IUS: levonorgestrel releasing intrauterine system; COC: short-acting combination oral contraceptives.

Table 2. The choices and costs of different contraceptive methods [samples (%)].

Classification	Cost (RMB)	∼15 (n = 3)	16∼19 (n = 160)	20∼24 (n = 392)	Total (n = 555)
Cu-IUDs	300∼500	0 (0)	17 (10.62)	50 (12.76)	67 (12.07)
LING-IUS	1100	0 (0)	2 (1.25)	7 (1.78)	9 (1.62)
Subcutaneous Implants	700	0 (0)	9 (5.63)	8 (2.04)	17 (3.06)
COC	150	3 (0)	132 (82.50)	327 (83.42)	462 (83.25)

Cu-IUDs: copper intrauterine devices; LING-IUS: levonorgestrel releasing intrauterine system; COC: short-acting combination oral contraceptives.

Figure 1. Subject enrolment/screening log.

Table 3. Basic information of the LARC and SARC groups [samples (%)].

Indicator	Classification	SARC (n = 462)	LARC (n = 93)	Total (n = 555)
Age (years)	∼15	3 (0.65)	0 (0)	3
	16∼19	132 (28.57)	28 (30.11)	160
	20∼24	327 (70.78)	65 (69.89)	392
Marital status	Unmarried	308 (66.67)	55 (59.14)	363
	Married	154 (33.33)	38 (40.86)	192
History of previous pregnancy	No	320 (69.26)	40 (43.01)	360
	Yes	142 (30.74)	53 (56.99)	195
History of previous abortions	0	320 (69.26)	40 (43.01)	360
	1	83 (17.97)	23 (24.73)	106
	2	28 (6.06)	13 (13.98)	41
	3	23 (4.98)	14 (15.05)	37
	4	8 (1.73)	3 (3.2)	11

LARC: long-acting reversible contraception; SARC: short-acting reversible contraception.

Table 4. Univariate analysis of the LARC and SARC groups [samples (%)].

Indicator	Classification	SARC (n = 462)	LARC (n = 93)	χ^2	p
Age (years)	≤19	131 (28.35)	29 (31.18)	0.180	0.672
	20∼24	331 (71.65)	64 (68.82)
Occupation	Student	59 (12.77)	22 (23.66)	6.512	0.011
	Other	403 (87.23)	71 (76.34)
Habitual residence	City	403 (87.23)	84 (90.32)	2.224	0.329
	County	40 (8.66)	4 (4.30)
	Village	19 (4.11)	5 (5.38)
Monthly income	Null	72 (15.58)	10 (10.75)	14.515	0.001
	< ¥3000	45 (9.74)	22 (23.65)
	≥¥3000	345 (74.68)	61 (65.60)
Education level	Junior high school and below	29 (6.28)	11 (11.83)	3.582	0.167
	High school	135 (29.22)	25 (26.88)
	Junior college and above	298 (64.50)	57 (61.29)
History of previous abortions	Yes	143 (30.95)	52 (55.91)	20.084	0.000
	No	319 (69.05)	41 (44.09)
Extent of worrying about unplanned pregnancy	No	59 (12.77)	4 (4.30)	31.379	0.000
	A little	216 (46.75)	22 (23.66)
	Very	187 (40.48)	67 (72.04)
Multiple sexual partners	Yes	15 (3.25)	3 (3.22)	0.000	1.00
	No	447 (96.75)	90 (96.77)
Previous contraceptive measures	Yes	364 (78.79)	80 (86.02)	2.100	0.147
	No	98 (21.21)	13 (13.98)
Parents’ attitude towards to use LARC	Yes	130 (28.14)	73 (78.49)	82.465	0.000
	No	332 (71.86)	20 (21.51)
Sexual partners’ attitude towards to use LARC	Yes	143 (30.95)	69 (74.19)	59.499	0.000
	No	319 (69.05)	24 (25.81)
Concerns about using LARC	Yes	398 (86.15)	56 (60.22)	33.251	0.000
	No	64 (13.85)	37 (39.78)
Concerns about pain	Yes	174 (37.66)	31 (33.33)	0.451	0.502
	No	288 (62.34)	62 (66.67)
Concerns about gaining weight	Yes	44 (9.52)	9 (9.68)	0.000	1.00
	No	418 (90.48)	84 (90.32)
Concerns about infection	Yes	150 (32.47)	26 (27.96)	0.534	0.465
	No	312 (67.53)	67 (72.04)
Concerns about affecting sex life	Yes	28 (6.06)	4 (4.30)	0.177	0.674
	No	434 (93.94)	89 (95.70)
Concerns about affecting reproductive function	Yes	216 (46.75)	28 (30.11)	8.045	0.005
	No	246 (53.25)	65 (69.89)
Concerns about the surgery risk	Yes	117 (25.32)	14 (15.05)	3.977	0.046
	No	345 (74.68)	79 (84.95)
Reluctance to use IUDs	Yes	147 (31.82)	12 (12.90)	12.640	0.000
	No	315 (68.18)	81 (87.10)
Concerns about the privacy	Yes	28 (6.06)	2 (2.15)	1.613	0.204
	No	434 (93.94)	91 (97.85)
Willingness to use free IUDs	Yes	51 (11.04)	70 (75.27)	183.586	0.000
	No	411 (88.96)	23 (24.73)

LARC: long-acting reversible contraception; SARC: short-acting reversible contraception; IUDs: intrauterine devices.

Table 5. Variable assignment table.

Index	Assignment
Whether to choose LARC	No = 0, Yes = 1
Occupation	Student = 0, Other = 1
Monthly income	Null = 0, < ¥3000 = 1, ≥ ¥3000 = 2
History of previous abortions	No = 0, Yes = 1
Extent of worrying about unplanned pregnancy	No = 0, A little = 1, Very = 2
Parents’ attitude towards to use LARC	No = 0, Yes = 1
Sexual partners’ attitude towards to use LARC	No = 0, Yes = 1
Concerns about using LARC	No = 0, Yes = 1
Concerns about affecting reproductive function	No = 0, Yes = 1
Concerns about the surgery risk	No = 0, Yes = 1
Reluctance to use IUDs	No = 0, Yes = 1
Willingness to use free IUDs	No = 0, Yes = 1

LARC: long-acting reversible contraception; IUDs: intrauterine devices.

Table 6. Multivariate analysis of the LARC and SARC groups.

	B	SE	Wald	p	Exp(B)	95% CI Exp(B)
						Lower limit	Upper limit
Monthly income			8.653	0.013
< ¥3000	−0.199	0.475	0.177	0.674	0.819	0.323	2.077
≥ ¥3000	1.233	0.447	7.606	0.006	3.432	1.429	8.244
History of previous abortions	1.145	0.334	11.743	0.001	3.141	1.632	6.045
Extent of worrying about unplanned pregnancy			8.721	0.013
A little	−0.937	0.641	2.136	0.144	0.392	0.112	1.376
No	−1.007	0.360	7.812	0.005	0.365	0.180	0.740
Parents’ attitude towards to use LARC	1.267	0.404	9.817	0.002	3.549	1.607	7.839
Sexual partners’ attitude towards to use LARC	0.854	0.402	4.510	0.034	2.349	1.068	5.167
Concerns about using LARC	−1.016	0.368	7.610	0.006	0.362	0.176	0.745
Willingness to use free IUDs	2.609	0.326	6.149	0.000	13.582	7.173	25.717
Constant	−3.232	0.488	43.888	0.000	0.039

CI: confidence interval; LARC: long-acting reversible contraception; SARC: short-acting reversible contraception; IUDs: intrauterine devices.

Note: Reference categories for the monthly income was ‘null’; history of previous abortions was ‘no’; extent of worrying about unplanned pregnancy was ‘very’; whether parents support to choose LARC was ‘no’; whether sexual partners support to choose LARC was ‘no’; concerns about using LARC was ‘no’; and whether willing to use free IUDs was ‘no’.

Data availability statement

The raw data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.