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. 2009 Mar 13;42(2):241–247. doi: 10.1111/j.1365-2184.2009.00590.x

Table 1.

Average and standard deviation (SD) values for age, age of menarche and body mass index in groups 1 (follicular phase) and 2 (luteal phase)

Group 1 Mean ± SD Group 2 Mean ± SD P
Age/year 25.97 ± 6.37 26.09 ± 7.38 0.66
Menarche/year 12.40 ± 1.28 12.55 ± 1.41 0.65
Body mass index (kg/m2) 25.97 ± 4.48 24.55 ± 3.2 0.11

Mann–Whitney test.