Fig 1.
A Conceptual model to represent dyadic injecting drug-related interpersonal dynamics.
(a) As injecting partners inject drugs together, their interactions result in injecting-related trust, cooperation, power, and intimacy. These factors interrelate to (b) shape the partners' injecting behaviors according to the judgments they make about protecting themselves and protecting the partnership. The relationship between trust, cooperation, power, and intimacy, on the one hand, with risk perception on the other, is dynamic over time and there is a fluctuation between judgments that protect oneself (person-centered) and judgments that protect the partnership (partnership-centered).
Table 1.
Participant characteristics and partnership narratives.