. 2019 Aug 26;9(8):e028705. doi: 10.1136/bmjopen-2018-028705

Table 3.

Main sociodemographic factors associated with participation in breast cancer screening among women in mainland China

First author, publish year	Geographical region		Residential area			Ethnicity
First author, publish year	Group	OR (95% CI)	Group	OR (95% CI)	Group	OR (95% CI)
Bao, 2018⁹	Central China versus Eastern China	0.51 (0.28 to 0.90)	Rural versus Urban	0.91 (0.83 to 0.99)	Other ethnicity versus Han	0.88 (0.79 to 0.98)
Bao, 2018⁹	Western China versus Eastern China	0.54 (0.32 to 0.92)	Rural versus Urban	0.91 (0.83 to 0.99)	Other ethnicity versus Han	0.88 (0.79 to 0.98)
Chen, 2007³³			Urban versus Suburban	For CBE 1.67 (1.21 to 2.30)
Gang, 2013³²					Being Chinese versus Korean-Chinese	2.20 (1.22 to 3.95)
Huang, 2011²⁰			Under-developed rural versus Developed urban	For never attending screening 12.01 (2.99 to 48.27)
Mu, 2015²¹			Urban versus Rural	4.54 (2.63 to 7.84)
Tian, 2018²³		For urban women				For rural women
	Central China versus Western China	3.32 (1.70 to 6.48)			Non-Han versus Han	0.32 (0.14 to 0.94)
	Eastern China versus Western China	10.57 (4.98 to 22.41)
		For rural women
	Central China versus Western China	9.11 (2.97 to 27.89)
Wang, 2013²⁴	Eastern China versus Western China	1.5 (1.2 to 2.0)
Wang, 2013²⁴	Middle China versus Western China	1.0 (0.9 to 1.3)

CBE, clinical breast examination.