Prevalence trends and risk factors associated with HIV, syphilis, and hepatitis C virus among pregnant women in Southwest China, 2009–2018

Table 1 Demographic characteristics of pregnant women recruited between 2009 and 2018 in southwest of China (n, %)

Variable	Total	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	cOR (95% CI)	p for trend
Variable	Total	(N = 743)	(N = 2773)	(N = 2789)	(N = 2807)	(N = 3200)	(N = 3200)	(N = 3169)	(N = 1195)	(N = 2003)	(N = 2000)	cOR (95% CI)	p for trend
Age
< 35 years	21,078	679	2584	2536	2557	2832	2837	2803	1010	1601	1639	1.00	0.00
< 35 years	88.27%	91.39%	93.18%	90.93%	91.09%	88.50%	88.66%	88.45%	84.52%	79.93%	81.95%	1.00
≥ 35 years	2801	64	189	253	250	368	363	366	185	402	361	1.14 (1.12–1.16)
≥ 35 years	11.73%	8.61%	6.82%	9.07%	8.91%	11.50%	11.34%	11.55%	15.48%	20.07%	18.05%	1.14 (1.12–1.16)
Ethnicity
Other minorities	14,882	72	1678	1691	1680	2052	2196	2090	689	1371	1363	1.00	0.00
Other minorities	62.32%	9.69%	60.51%	60.63%	59.85%	64.13%	68.63%	65.95%	57.66%	68.45%	68.15%	1.00
Han	8997	671	1095	1098	1127	1148	1004	1079	506	632	637	1.09 (1.08–1.11)
Han	37.68%	90.31%	39.49%	39.37%	40.15%	35.88%	31.37%	34.05%	42.34%	31.55%	31.85%	1.09 (1.08–1.11)
Marital status
Married/cohabitating	21,923	711	2628	2555	2592	2959	2942	2926	1046	1795	1769	1.00	0.00
Married/cohabitating	91.81%	95.69%	94.77%	91.61%	92.34%	92.47%	91.94%	92.33%	87.53%	89.62%	88.45%	1.00
Other	1956	32	145	234	215	241	258	243	149	208	231	0.92 (0.90–0.93)
Other	8.19%	4.31%	5.23%	8.39%	7.66%	7.53%	8.06%	7.67%	12.47%	10.38%	11.55%	0.92 (0.90–0.93)
Education △
≥ 9 years	6742	205	690	624	743	760	763	899	497	748	813	1.00	0.00
≥ 9 years	28.23%	27.74%	25.06%	22.39%	26.54%	23.87%	23.93%	28.38%	41.84%	37.34%	40.65%	1.00
< 9 years	17,069	534	2063	2163	2057	2424	2426	2269	691	1255	1187	1.10 (1.09–1.11)
< 9 years	71.48%	72.26%	74.94%	77.61%	73.46%	76.13%	76.07%	71.62%	58.16%	62.66%	59.35%	1.10 (1.09–1.11)

CI means confidence interval, cOR means crude odds ratio, △ means a partial absence of data

ISSN: 1742-6405