Can your sleep length predict the best insomnia cure?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 18 or older * Able to read and effectively communicate in English at the United States sites or able to read and effectively communicate in English or French at the Canadian site. * Meets criteria for chronic insomnia * Body Mass Index (BMI) 18.5 kg/m2 and higher Exclusion Criteria: * Age \< 18 * Unable to read and effectively communicate in English at the United States sites or able to read and effectively communicate in English or French at the Canadian site. * Unwilling to share email address/cell phone number to accept survey links. * Life time diagnosis of psychotic or bipolar disorder * History of severe apnea or an Apnea Hypopnea Index (AHI) ≥15 that is not currently treated with Positive Airway Pressure (PAP) therapy, an oral device or an implanted device, or was not treated with surgery or weight loss. * Started new or changed treatment for sleep apnea in the past three months * Does not meet criteria for chronic insomnia * Meets criteria for narcolepsy or hypersomnia disorder * Meets criteria for circadian rhythm disorder (including night shift work) * Unstable medical conditions that would make participation unsafe or unfeasible * Falls resulting in hospitalization, significant injury or fracture within past 12 months * 2 hospitalizations or emergency room visits within past 12 months for chronic conditions * Active chemotherapy or radiation therapy for cancer * Lifetime diagnoses/treatment of chronic renal failure, hepatic insufficiency, chronic heart failure * Does not agree to refrain from other treatments for insomnia beyond what is offered in this study * BMI less than 18.5 * Substance abuse or dependence in the past 12 months * Current use of prescription or over the counter medications taken for sleep greater than 2 times per week * Current use of systemic corticosteroids or opiate medications * Current pregnancy or breastfeeding; plans to get pregnant or unwillingness to use birth control for the length of the study * Current use of medications contraindicated with trazodone * Sleep apnea or periodic leg movement disorder as determined by sleep study * Blood Pressure levels defined as seated SBP greater than 180 or DBP greater than 110 mmHg * EKG corrected QT interval greater than or equal to 500 ms