Appendix Table 3.

Summary statistics of explanatory variables included in Table 3

	Year of Marriage
	1	2	3	4
Chances of getting HIV, %
No chances	38.3	40.0	41.3	34.4
Any chances	58.9	58.5	57.8	63.9
Don’t know	2.7	1.6	0.9	1.6
Ethnic group, %
Yao	46.2	46.7	53.2	59.0
Chewa	19.9	20.9	17.9	11.5
Lomwe	21.1	21.4	16.5	19.7
Other	12.9	11.1	12.4	9.8
Highest grade attended, %
Less than standard 8	71.2	72.9	78.9	85.3
Standard 8	20.7	21.9	17.9	9.8
Some secondary	8.1	5.2	3.2	4.9
Mean household items	3.3	3.4	3.5	3.6
Age at marriage (mean)	16.6	16.3	15.9	15.3
Spouse age difference, %
Same age	3.5	1.8	1.4	0.0
1–4 years older	83.9	92.3	94.0	96.7
5+ years older	11.4	5.2	3.7	3.3
Unknown	1.2	0.8	0.9	0.0
Formality of marriage, %
Consensual union	8.7	6.7	3.2	8.2
Ankhoswe only, no ceremony	29.2	27.8	24.8	21.3
Traditional ceremony	40.1	43.0	45.4	41.0
Religious ceremony	11.8	15.2	18.4	21.3
Unknown	10.3	7.2	8.3	8.2
Mother has died, %	17.9	17.3	18.4	19.7
Father has died, %	26.1	27.6	28.4	31.2
Mean perceived HIV prevalence	4.0	4.0	4.3	4.0
Don’t know HIV prevalence, %	5.5	5.4	5.5	4.9
Ever reported condom use, %	53.4	62.1	66.5	68.9
N	806	388	218	61