Table 1

Population characteristics

Males

Mean

SD

Range


Age [years]

28.9

5.6

22-46


Average salivary testosterone concentration [pg/mL]

178.9

44.1

108.1-276.6


Masturbation frequency [per 30-day month]

4.7

4.9

0-15.8


Intercourse frequency [per 30-day month]

6.1

4.2

0-13.78


Physical exercise frequency [per 30-day month]

5.9

5.9

0-20


Alcohol intake frequency [per 30-day month]

3.5

2.5

0-8.75


Females


Mean

SD

Range


Age [years]

26.9

5.6

20-45


Cycle length [days]

29

2.5

25-34


Strom et al. Journal of Negative Results in BioMedicine 2012 11:1   doi:10.1186/1477-5751-11-1

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