Skip to main content
. 2007 May 15;4(5):e167. doi: 10.1371/journal.pmed.0040167

Figure 2. Average Luteal Progesterone Profiles by Categories of Age at Migration to the UK.

Figure 2

Unadjusted mean luteal progesterone index values. Mean ± SEM: 44.3 ± 8.6 pg/ml (ages 0–8 y, n = 22); 31.8 ± 6.8 pg/ml (ages 9 y to menarche, n = 17); 24.6 ± 2.5 pg/ml (postmenarche, n = 46). Ovulation dates were estimated from oestradiol data available for the same individual menstrual cycles [22]. Confidence intervals are omitted for visual clarity. Sample sizes include all women for which hormonal data were available and may differ from total sample size for other aspects of data collection.