Table 1.

Baseline demographic characteristics of LARC users

		All LARC (N=5011)		LNG-IUS (N=3001)		Copper IUD (N=826)		Implant (N=1184)		p-value
Age		Mean	SD	Mean	SD	Mean	SD	Mean	SD	<0.001
		25.6	6.0	26.0	5.8	27.9	6.3	23.0	5.7
		N	%	N	%	N	%	N	%
Age Category										<0.001
<18		274	5.5	75	2.5	10	1.2	189	16.0
18–20		713	14.2	378	12.6	67	8.1	268	22.6
21–25		1859	37.1	1173	39.1	264	32.0	422	35.6
26–30		1160	23.1	757	25.2	230	27.8	173	14.6
>30		1005	20.1	618	20.6	255	30.9	132	11.1
Race										<0.001
Black		2442	48.7	1419	47.3	298	36.1	725	61.2
White		2186	43.6	1376	45.9	454	55.0	356	30.1
Other		383	7.6	206	6.9	74	9.0	103	8.7
Ethnicity										<0.001
Hispanic		265	5.3	132	4.4	46	5.5	87	7.3
Marital Status										<0.001
Single/never married		2897	57.8	1714	57.1	383	46.4	800	67.6
Married/living with a partner		1738	34.7	1063	35.4	350	42.4	325	27.5
Separated/divorced/widowed		373	7.4	223	7.4	92	11.2	58	4.9
Education level										<0.001
Less than 12th grade		1727	34.5	906	30.2	198	24.0	623	52.7
Some College		2074	41.4	1316	43.9	346	41.9	412	34.8
College Degree or above		1208	24.1	778	25.9	282	34.1	148	12.5
Gravidity										<0.001
0		1331	26.6	724	24.1	231	28.0	376	31.8
1		1038	20.7	598	19.9	122	14.8	318	26.9
2		946	18.9	621	20.7	148	17.9	177	14.9
3+		1696	33.8	1058	35.3	325	39.3	313	26.4
Parity										<0.001
0		2124	42.4	1196	39.9	348	42.1	580	49.0
1		1285	25.6	810	27.0	169	20.5	306	25.8
2		976	19.5	630	21.0	170	20.6	176	14.9
3+		626	12.5	365	12.2	139	16.8	122	10.3
Baseline BMI										0.06
<18.5		110	2.2	64	2.2	17	21	29	2.5
18.5 – 24.9		1880	37.9	1093	36.8	352	43.0	435	37.0
25 – 29.9		1311	26.4	810	27.3	197	24.1	304	25.9
30+		1662	33.5	1001	33.7	253	30.9	408	34.7
Any History of STI – Excluding BV & PID										0.87
No		2989	59.6	1798	59.9	492	59.6	699	59.0
Yes		2022	40.4	1203	40.1	334	40.4	485	41.0
Smoking Status										<0.001
Never smoker		2653	53.1	1543	51.6	403	48.8	707	59.9
Previous smoker		1189	23.8	744	24.9	220	26.7	225	19.1
Current smoker		1155	23.1	704	23.5	202	24.5	249	21.1