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. 2019 Jun 26;365:l2327. doi: 10.1136/bmj.l2327

Table 3.

Allele scores for sleep traits in UK Biobank

Sleep trait No (incident cases) Mean (SD) No of increasing alleles Association of allele score with sleep trait*
Coefficient (SE) P value R2 F statistic
Chronotype (morning preference) 151 421 (2732) 336 (11.6) 0.017 (0.0003) <0.001 0.0229 3666
Sleep duration 150 845 (2723) 90 (5.9) 0.015 (0.0004) <0.001 0.0072 1127
Insomnia symptoms 149 005 (2740) 56 (4.9) 0.012 (0.0002) <0.001 0.0041 639
*

Adjusted for age, assessment centre, 40 principal components, and genotyping chip.