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Table 3 Descriptive statistics for physiologically relevant intervals (mean ± SEM) among experimental groups

From: Effects of a single 20 mg dose of letrozole on ovarian function post dominant follicle selection: an exploratory randomized controlled trial

Experimental Group N Interval from menses to OV Inter-menstrual interval Inter-ovulatory interval Interval from treatment to menses
12 mm 10 16.6 ± 0.5 27.6 ± 1.1 29.5 ± 1.6 19.7 ± 1.3
18 mm 10 16.4 ± 1.1 29.6 ± 1.4 26.9 ± 2.0 16.1 ± 0.6a
Post OV 10 16.9 ± 0.8 28.0 ± 1.0 23.9 ± 3.0 11.1 ± 0.9a, b
Control 11 17.2 ± 1.0 28.5 ± 1.1 29.0 ± 1.1 NA
P-value   0.9284 0.6551 0.2014 0.0001
  1. All intervals are in days
  2. N = 9 for 18 mm group and N = 10 for control group in inter-ovulatory interval column
  3. adifference from 12 mm group (P < 0.05)
  4. bdifference from 18 mm group (P < 0.05)