Histogram

Encounter number vs Patient's gestational age in days (when available)
N Mean StdDev Median Min Max Unknown Total
First overnight sleep study 2,236 263.0 ± 24.3 273.0 160.0 308.0 1,437 3,673
Second overnight sleep study 213 261.8 ± 25.6 270.0 161.0 294.0 60 273
Third overnight sleep study 34 269.2 ± 13.1 271.5 238.0 288.0 1 35
Fourth overnight sleep study 2 266.5 ± 9.2 266.5 260.0 273.0 - 2
Fifth overnight sleep study 1 260.0 - 260.0 260.0 260.0 - 1