Table 3.

Changes in risk perception and condom use between surveys, Manicaland, Zimbabwe, 2003–13

	Males				Females
	Risk perception		Condom use		Risk perception		Condom use
Surveya	Increase	Decrease	Increase	Decreaseb	Increase	Decrease	Increase	Decreaseb
3 (2003–05) to 4 (2006–08)	8.25	10.51	7.23	13.2	14.9	18.9	6.48	5.78
4 (2006–08) to 5 (2009–11)	8.62	8.80	6.60	12.3	16.3	21.0	7.93	5.06
5 (2009–11) to 6 (2012–13)	11.8	6.40	8.00	7.02	17.1	18.9	6.06	6.28

Values are percentages (%) of change between two surveys.

^a Survey 1 (1998–2000) and survey 2 (2001–2003) were not included in this analysis given changing measurement of risk perception and condom use; see methods section

^b Decrease in condom use is considered in Additional file 1, section 7