BMI >25比BMI<25病患懷孕率略低3%

http://humrep.oxfordjournals.org/content/27/2/457.full

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Figure 7

Live birth rates following IVF for overweight and normal weight women in different age groups.

Table III

Incidence of positive outcomes after ART in overweight and obese^a compared with normal weight women with PCOS^b

Study	n	Per	Outcome	Incidence (%)		OR (95% CI)	Incidence (%)		OR (95% CI)
				BMI > 25	BMI < 25		BMI > 30	BMI < 30
Ozgun et al. (2011)c	44	Woman	Live birth	NA	NA	NA	22	46	0.3 (0.1 to 1.3)
Orvieto et al. (2009b)	100	Cycle	cp	16	29	0.5 (0.2 to 1.2)	NA	NA	NA
McCormick et al. (2008)	17	Cycle	Live birth	NA	NA	NA	46d	83d	0.2 (0.01 to 1.9)d
Kjotrod et al. (2004)c	73	Woman	Live birth	NA	NA	NA	38e	39e	0.9 (0.4 to 2.4)e

• NA, not available; cp, clinical pregnancy.
• ^aComparisons as stated except where indicated ^dBMI >30 versus BMI 18.5–24.9, ^eBMI > 28.
• ^bDefined by Rotterdam criteria.
• ^cProspective study others are retrospective.