Table 1. Progesterone and prolactin in pregnant and non-pregnant women (n=330).
Variable (ng/ml) Pregnant (n=154) Non-Pregnant (n=176) p
P4 32.1 (19.7 - 46) 26.2 (17,4 -39,8) 0.013
PRL 20.7 (15.5 -34.7) 21.3 (14,2 -30,8) 0.303

Described by median and IIQ (1stquartile - 3rdquartile)
*Non-parametric Mann-Whitney test, p<0.05
Note: P4 - progesterone; PRL - prolactin; ng/ml - nanogram/milliliter