The Sleep Timing Questionnaire (STQ)
| Name of questionnaire | The Sleep Timing Questionnaire (STQ) |
| Type of questionnaire-description | An alternative to a sleep diary. Provides an assessment of habitual bedtimes and waketimes in a single administration questionnaire format. STQ also provides data on estimated sleep latency and wake after sleep onset. |
| Number of items | 18 |
| Number of domains/categories | 2 |
| Name of categories/domains | Good night time / Good morning time |
| Scaling of items | Direct responses are used to determine habitual sleep and wake times. |
| Scoring available: with permission or free | Not applicable |
| Scoring test-retest reliability | Compared results of STQ administered on two separate occasions separated by less than 1 year :the test re-test correlation was positive and significant (bedtime: r=0.705, p<0.001; waketime: r=0.826,p<0.001), |
| Scoring Internal consistency | As above |
| Validity | Convergent validity: comparing STQ Measures of bed timing with wrist actigraphy measurement: correlation was positive and significant (bedtime: r=0.592, p=0.003; waketime: r=0.769, p<0.001). Convergent Validity: comparing with 2-week sleep diaries also correlated significantly. |
| Language | English |
| Translations in other languages (if yes, then list the languages) | Arabic |
| Developer name | Timothy H. Monk, Ph.D., D.Sc., Daniel J. Buysse, M.D., et al. |
| Developer contact information | Timothy H. Monk, Ph.D., D.Sc., WPIC Room E1123, 3811 O’Hara St, Pittsburgh PA 15213 USA, Ph: 412-624-2246, FAX: 412-624-2841, Email: monkth@msx.upmc.edu |
| Availability of questionnaire: needs permission from developer, cost or freely available | The copyright rests with the University of Pittsburgh who require the following: This form may only be used for non-commercial education and research purposes. If you would like to use this instrument for commercial purposes or for commercially sponsored research, please contact the Office of Technology Management at the University of Pittsburgh at 412-648-2206 for licensing information. STQ is free for research purposes only. Any other use requires the permission of and may require payment to the University of Pittsburgh which holds the copyright. |
| References (original publication) | Monk TH, Buysse DJ, Kennedy KS, Pods JM, DeGrazia JM, Miewald JM. Measuring sleep habits without using a diary: the sleep timing questionnaire. Sleep. 2003 Mar 15;26(2):208-12. |
| Limitations | May lack richer detail provided by a 2 week sleep diary. |
| Link to the questionnaire (if available) |
A copy of the questionnaire can be found in the original publication: |
| Other comments | Also validated in children |
