Collateral consequences: implications of male incarceration rates, imbalanced sex ratios and partner availability for heterosexual Black women.

While studies have found correlations between rates of incarceration and sexually transmitted infections (STIs), few studies have explored the mechanisms linking these phenomena. This qualitative study examines how male incarceration rates and sex ratios influence perceived partner availability and sexual partnerships for heterosexual Black women. Semi-structured interviews were conducted with 33 Black women living in two US neighbourhoods, one with a high male incarceration rate and an imbalanced sex ratio (referred to as 'Allentown') and one with a low male incarceration rate and an equitable sex ratio (referred to as 'Blackrock'). Data were analysed using grounded theory. In Allentown, male incarceration reduced the number of available men, and participants largely viewed men available for partnerships as being of an undesirable quality. The number and desirability of men impacted on the nature of partnerships such that they were shorter, focused on sexual activity and may be with higher-risk sexual partners (e.g. transactional sex partners). In Blackrock, marriage rates contributed to the shortage of desirable male partners. By highlighting the role that the quantity and quality of male partners has on shaping sexual partnerships, this study advances current understandings of how incarceration and sex ratios shape HIV- and STI-related risk.