Please assess the completion status of the following clinical trial:

Trial Title: Melatonin CR for the Treatment of Impaired Sleep Maintenance in 4-8 Year Old Children With Autism Spectrum Disorders

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female children,~* ages 4-8 years,~* diagnosed with an ASD, including~* Pervasive Developmental Disorder NOS (PDD, NOS),~* Asperger's Syndrome, or~* Autistic Disorder, and followed in the Munroe Meyer Developmental Pediatrics Clinic. Documented impaired sleep maintenance (ISM) based on parent-report and 7 day somnolog (sleep diary).~* Clinician rating of 4 (moderately ill) or worse on CGI-S. Rating is based on the clinician's experience with evaluating and treating this patient population.~* Previous discussion during a clinic appointment about sleep difficulties, including review of sleep hygiene and basic behavioral interventions/strategies.~* Current problems of overnight awakenings recorded on the Children's Sleep Habits Questionnaire (CSHQ) despite behavioral intervention.~* Stable psychotropic medication treatment for the past 4 weeks.~Exclusion Criteria:~Treatment with Melatonin or Melatonin CR during the past month or previous failed treatment with Melatonin CR.~Presence of a previously unevaluated medical condition which may be the etiology of the nighttime awakenings. There is no contraindication for use of Melatonin CR in patients with obstructive sleep apnea.

- Gender: ALL
- Minimum Age: 4 Years
- Maximum Age: 8 Years
- Healthy Volunteers: f

Study Arms:
- Natrol (Type: EXPERIMENTAL): Subjects receive Natrol (sustained release melatonin) 5mg tablet 30 minutes prior to bedtime for 10 to 14 days

Based on this trial design, predict the completion outcome and termination type (if applicable).