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Section and category

Mental Health.Sleep


Description

“How many hours do you typically sleep per day (incl. naps)?”


Additional information

Metadata
contents No. of hours
soft_min 4
soft_max 9
hard_min 1
hard_max 20
is_mandatory Yes

Data summary

Baseline




mean sd min q1 med q3 max mad iqr cv skewness se.skewness kurtosis n.valid pct.valid
7.38 1.37 0 7 8 8 19 1.48 1 0.19 -0.36 0 0.97 515413 100

Qc




mean sd min q1 med q3 max mad iqr cv skewness se.skewness kurtosis n.valid pct.valid
7.4 1.32 1 7 8 8 14 1.48 1 0.18 -0.32 0.02 0.96 15816 100

Resurvey 1




mean sd min q1 med q3 max mad iqr cv skewness se.skewness kurtosis n.valid pct.valid
7.31 1.3 1 7 7 8 14 1.48 1 0.18 -0.29 0.02 0.98 19803 100

Resurvey 2




mean sd min q1 med q3 max mad iqr cv skewness se.skewness kurtosis n.valid pct.valid
7.36 1.53 1 6 7 8 18 1.48 2 0.21 -0.05 0.02 1.26 25054 99.22




Between-survey agreement

[1] “Spearman’s correlation matrix:”

Baseline Qc Resurvey1 Resurvey2
Baseline 1.000 0.640 0.398 0.382
Qc 0.640 1.000 0.462 0.442
Resurvey1 0.398 0.462 1.000 0.377
Resurvey2 0.382 0.442 0.377 1.000


International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF

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Page generated: 27-02-2024