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Section and category

Physical Exam.Lung function


Description

“Meets OLD (GOLD stage 1+) criterion for COPD (i.e. f_ratio < 70%)”


Additional information

Metadata
contents Categorised
is_mandatory No

Data summary

Baseline




value freq pct_valid pct_tot
No 487440 94.65 94.57
Yes 27566 5.35 5.35
<NA> 407 NA 0.08

Qc




value freq pct_valid pct_tot
No 14764 93.55 93.35
Yes 1018 6.45 6.44
<NA> 34 NA 0.21

Resurvey 1




value freq pct_valid pct_tot
No 16053 82.5 81.06
Yes 3406 17.5 17.20
<NA> 344 NA 1.74

Resurvey 2




value freq pct_valid pct_tot
No 18092 74.59 71.65
Yes 6163 25.41 24.41
<NA> 997 NA 3.95




Between-survey agreement

Fleiss’ Kappa for m Raters:

N.participants Surveys Statistic Coefficient Z.statistic p.value
463 4 Kappa 0.272 14.328 0


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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Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)

Page generated: 27-02-2024