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. Author manuscript; available in PMC: 2007 Jun 15.
Published in final edited form as: Hum Reprod. 2006 Oct 27;22(3):853–857. doi: 10.1093/humrep/del417

Table I.

Within-woman comparison of bleed characteristics associated with a pregnancy lost prior to six weeks gestation versus menstrual bleed characteristics following cycles with no detected conception (N = 36 women)

Characteristics of Pad + Tampon Use Early Loss
No Conception
Early Loss – No Conception
Mean SEa 25thb 75thb Mean SE 25th 75th Mean SE p-valuec
Length of use (days) 5.8 0.3 5.0 6.8 5.4 0.2 4.9 6.0 0.4 0.2 0.01
Total no. used during bleed period 18.2 1.2 12.5 23.0 18.4 1.3 13.0 24.3 −0.2 0.9 0.94
Max. no. used in one day 5.2 0.4 3.0 6.0 5.4 0.4 3.6 7.3 −0.3 0.3 0.53
Mean no. per bleeding day 3.2 0.2 2.2 4.1 3.5 0.2 2.4 4.4 −0.2 0.1 0.06
Period day of heaviest use 2.3 0.1 1.9 3.0 2.2 0.1 1.8 2.5 0.0 0.1 0.78
No. of light days (0–3)d,e 3.8 0.3 3.0 5.0 3.3 0.3 2.0 5.0 0.5 0.2 0.004
No. of medium days (4–6) 1.6 0.2 0.0 3.0 1.6 0.2 0.8 2.0 0.1 0.2 0.90
No. of heavy days (7+) 0.4 0.1 0.0 0.0 0.6 0.1 0.0 1.0 −0.2 0.1 0.15
a

Standard Error

b

25th, 75th percentile values

c

Wilcoxon signed rank test

d

Numbers in parentheses indicate daily total for pad + tampon use.

e

One bleed episode has a single day with pads + tampons = 0.