Sleep Intervention

Not Applicable

Completed

• Conditions: Mental

• Registration Number: NCT03047356
• Lead Sponsor: University of Manchester

Brief Summary

A trial that tests whether implementation intentions improve sleep among adoelescents.

Detailed Description

Not available

Study Timeline

• Study Start: 2016-03-04
• Primary Completion: 2016-04-06
• Study Completion: 2016-04-06
• Status Verified: 2017-02
• Study First Submitted: 2017-02-03
• Study First Submitted QC: 2017-02-06
• Last Update Submitted: 2017-02-06
• Study First Posted: 2017-02-08
• Last Update Posted: 2017-02-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 151

Inclusion Criteria

• Aged 12-16 years

Exclusion Criteria

• Unable or unwilling to complete the question

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Achieving recommended sleep levels	1 month	The main outcome measure was adapted from the Pittsburgh Sleep Quality Index (Buysse, Reynolds, Monk, Berman, \& Kupfer, 1989), and was designed to tap both quantity and quality of sleep. Sleep quantity was assessed by asking: "How many hours of actual sleep do you normally get on a night before school? _________ hours," "What time do you normally go to bed on a night before school? __________ pm," and "What time do you normally get up on a school day? __________ am."

Secondary Outcome Measures

Name	Time	Method
Habit	1 month	Gardner et al.'s (2012) self-report behavioral automaticity index, which consists of four items measured on 7-point strongly disagree-strongly agree scales. The items are: "Getting 9 hours' sleep on the nights before school is something I do automatically," "Getting 9 hours' sleep on the nights before school is something I do without thinking," "Getting 9 hours' sleep on the nights before school is something I do without having to consciously remember," and "Getting 9 hours' sleep on the nights before school is something I start doing before I realize I'm doing it."
Self-regulation	1 month	Sniehotta, Nagy, and Scholz's (2006) six items were used to capture three facets of action control (Karoly, 1993) on 7-point (+1 to +7) strongly disagree-strongly agree scales. (e.g., "During the last month I constantly monitored my sleep on the nights before school")