Table 5.

Multivariable analysis of infections at the stage of AIDS¹ including interaction term between GISD² and city size (only MSM³)

n = 8198
	Countryside (< 100 k residents)			Town/Major city (> = 100 k residents)
	n (%)†	aPR [95% CI]‡	p-value	n (%)†	aPR [95% CI]‡	p-value
GISD1
Low deprivation	66 (12.3%)	1		187 (11.1%)	1
Medium deprivation	268 (13.7%)	1.12 [0.88, 1.42]	0.373	326 (10.2%)	0.92 [0.77, 1.10]	0.348
High deprivation	92 (17.2%)	1.41 [1.08, 1.85]	0.013	34 (12.5%)	1.12 [0.75, 1.68]	0.587

¹AIDS Evidence of AIDS-defining illness, ²GISD German Index of Socioeconomic Deprivation, ³MSM Men who have sex with men

^†Strata specific number and proportion of infections at the stage of AIDS at the time of diagnosis

^‡Prevalence ratios with corresponding 95% confidence intervals of infections at the stage of AIDS at the time of diagnosis were calculated for the exposure variable GISD using multivariable Poisson regression with ZIP code cluster-robust error variance (standard errors were adjusted for 644 clusters). The model was stratified for MSM and adjusted for the variables of approximated age at the time of infection, region of origin and city size. For simplicity purposes, only strata specific effect estimates of the GISD conditional on countryside vs. town/major city are depicted. The effect estimates of the remaining covariates are nearly identical as presented in Table 4 in the MSM stratum