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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Hum Immunol. 2012 May 28;73(8):811–817. doi: 10.1016/j.humimm.2012.05.009

Table 2.

Characteristics of the study sample. Means were compared by t-test; P-values are shown.

RPL Cases
(N=50)
Controls
(N=50)
P-value
Mean Age ± SD
(Range)
28.4 ± 6.2 yrs
(20–40)
26.7 ± 6.0 yrs
(17–39)
0.16
Mean Number of
Pregnancies ± SD
(Range)
4.3 ± 1.9
(2–14)
3.4 ± 1.4
(2–9)
0.0097
Mean Number of Prior
Live Births ± SD
(Range)
0.42 ± 0.64
(0–2)
2.4 ± 1.4
(1–8)
7.8×10−14