Reliability and validity of the revised Chinese version of the Children’s Sleep Habits Questionnaire (CSHQ-CH-R)

The final version of the CSHQ-CH-R included 30 items and 8 subscales. Three subscales (bedtime resistance, sleep duration and daytime sleepiness) were revised, and the other five subscales were unchanged from those of the CSHQ-CH. The internal consistency for the full scale was 0.83 for the community sample, and 0.73 for the clinical sample. The internal consistency ranged from 0.47 (sleep duration) to 0.72 (bedtime resistance) for the community sample, and 0.38 (sleep duration) to 0.83 (sleep-disordered breathing) for the clinical sample. The interobserver reliability for the full scale was 0.55, and ranged from 0.38 (parasomnias) to 0.74 (bedtime resistance) for the subscales. The test–retest reliability was 0.70 for the full scale, and ranged from 0.54 (sleep duration) to 0.78 (bedtime resistance) for the subscales. Concurrent validities against actigraphy were 0.62 and 0.33 for “time in bed” and “night sleep duration”, respectively. The clinical sample scored higher than the community sample did for the full scale and subscales (P < 0.01). A cut-off total score of 44 was determined, with an area under the curve of 0.76, a sensitivity of 0.64, and a specificity of 0.76. To facilitate cross-cultural comparisons, psychometric properties and cut-off values for the CSHQ-CH with the original 33 items were also provided.