Table 3.

Sensitivity analysis of the effect of size and shape of the kernel (used to derive the male community-level sexual behaviour variables) and an alternative community-level concurrency measure on a woman's hazard of HIV acquisition (N=7284)

		HR (95% CI)	p value
Gaussian 3·8 km radius (SD 1)
Mean lifetime partners
	Unadjusted	1·12 (1·06–1·20)	0·0002
	Adjusted A	1·11 (1·04–1·18)	0·002
	Adjusted A+B	1·12 (1·04–1·20)	0·002
Prevalence of concurrency, 10% increase
	Unadjusted	1·00 (0·93–1·08)	0·967
	Adjusted A	1·02 (0·94–1·11)	0·568
	Adjusted A+B	0·97 (0·89–1·06)	0·567
Gaussian 3 km radius (SD 3)
Mean lifetime partners
	Unadjusted	1·17 (1·08–1·28)	0·0003
	Adjusted A	1·11 (1·01–1·23)	0·035
	Adjusted A+B	1·14 (1·02–1·27)	0·019
Prevalence of concurrency, 10% increase
	Unadjusted	0·96 (0·87–1·07)	0·501
	Adjusted A	0·99 (0·88–1·10)	0·831
	Adjusted A+B	0·94 (0·83–1·06)	0·291
Gaussian 2·5 km radius (SD 1)
Mean lifetime partners
	Unadjusted	1·07 (1·02–1·12)	0·003
	Adjusted A	1·07 (1·02–1·12)	0·006
	Adjusted A+B	1·07 (1·02–1·13)	0·007
Prevalence of concurrency, 10% increase
	Unadjusted	0·99 (0·93–1·05)	0·888
	Adjusted A	1·02 (0·96–1·08)	0·628
	Adjusted A+B	1·00 (0·94–1·06)	0·718
Gaussian 3 km radius (SD 1), mean number of concurrent partners*
	Unadjusted	1·06 (0·87–1·29)	0·553
	Adjusted A	1·10 (0·90–1·35)	0·329
	Adjusted A+B	0·88 (0·69–1·14)	0·332

HR=hazard ratio. The unadjusted model includes only the male community-level sexual behaviour covariate. The adjusted A model includes one of the community-level sexual behaviour covariates and community level HIV prevalence (male), partners in past 12 months, marital status, years of education, urban locale, wealth tertile, and age. The adjusted A + B model included all the independent variables included in model A (in the row immediately above) and the community-level sexual behaviour covariate not included in model A.

^*An alternative community-level indicator of partnership concurrency.