Reported sleep: needed minus obtained sleep, family resemblance, and age.
For a normal population from 13 to 89 yr. of age there was a correlation of .02 between age and sleep obtained, -.07 between age and sleep needed, and -.33 (p less than .01) between age and sleep needed minus sleep obtained. Also, significant family resemblance was found for all three of the above sleep variables.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012890:Sleep