- Prior rapid- or short-acting insulin therapy: participants receiving scheduled long-term short-acting or rapid-acting or premixed insulin therapy within the past 6 months will not be eligible to participate in the study. Participants who have previously received short- or rapid-acting insulin as part of short-term insulin therapy (during gestational diabetes, during an acute hospitalization or illness) or occasional use will be allowed to participate in this study. Occasional use (e.g., used to treat acute hyperglycemia) shall be defined as less than daily administration of not more than 1 dose per day of short- or rapid-acting insulin