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. 2001 Jan 20;322(7279):134–137. doi: 10.1136/bmj.322.7279.134

Table 1.

 Characteristics of 170 women at entry into study of agnus castus extract as treatment for the premenstrual symdrome (active treatment n=86; placebo n=84)

Mean (SD) Median
Age (years):
 Active 37 (8.4) 37
 Placebo 36 (7.4) 37
Height (cm):
 Active 167 (6.2) 168
 Placebo 167 (5.5) 168
Weight (kg):
 Active 63 (9.8) 61
 Placebo 64 (9.8) 63
Cycle length (days):
 Active 28 (1.2) 28
 Placebo 28 (1.0) 28
Age at menarche (years):
 Active 13 (1.0) 12
 Placebo 13 (1.2) 12
Menses duration (days):
 Active 4.6 (1.0) 5.0
 Placebo 4.7 (0.9) 5.0
Patient self assessment on visual analogue score (mm):
 Active  263 (104.3) 262
 Placebo  256 (112.4) 240
Clinical global impression item 1 (severity of condition):
 Active 5.1 (1.0) 5.0
 Placebo 5.0 (1.0) 5.0