INS and diabetes mellitus: Study participants were 1076 adults (type 1 = 509, type 2 = 567) in clinical trials of Technosphere Insulin®, who completed the SF-36 health-related quality of life questionnaire and the Inhaled Insulin Treatment Questionnaire (IITQ), a new instrument assessing diabetes worries, perceptions of insulin therapy, treatment satisfaction, treatment preference, and inhaler performance.