Histogram

Encounter number vs Patient's gestational age truncated to the nearest full week (when available)
N Mean StdDev Median Min Max Unknown Total
First overnight sleep study 2,236 37.4 ± 3.5 39.0 22.0 44.0 1,437 3,673
Second overnight sleep study 213 37.2 ± 3.7 38.0 23.0 42.0 60 273
Third overnight sleep study 34 38.2 ± 1.9 38.5 34.0 41.0 1 35
Fourth overnight sleep study 2 38.0 ± 1.4 38.0 37.0 39.0 - 2
Fifth overnight sleep study 1 37.0 - 37.0 37.0 37.0 - 1