“…Accounts referenced increasing tolerance to a drug (37, 40, 41, 47, 48, 52, 55, 58, 60, 68, 70, 71, 76), withdrawals (47, 48, 56, 58, 61, 70) and economic pressures or recognition of the economic efficiency of injecting (37, 41, 46–48, 51, 52, 55, 58, 60–63, 65, 68, 70–73, 76, 77) as linked to injection initiation. The economic efficiency of injecting was potentially framed around desperation and regret: injecting drugs was then about ‘getting straight rather than getting high’ (48).…”