Table 1 Characteristics of Subfertile Couples Beginning Treatment with Natural Procreative Technology (n=370)

Woman’s age, mean (SD) [minimum-maximum], y

34.8 (5.86) [21-49]

≥35

186 (50)

Time attempting to conceive, mean (SD) [minimum-maximum], y

2.67 (3) [0.5-19.6]

 <1

97 (26)

 1-2.9

165 (45)

 ≥3

108 (29)

BMI, mean (SD) [minimum-maximum]^a

25.58 (6.15) [17-51]

 <25

154 (56)

 ≥25

121 (44)

Had prior pregnancy

169 (46)

Had prior live birth^a

99 (27)

Had prior miscarriage

118 (32)

Had 3 or more prior miscarriages

22 (6)

Received prior in vitro fertilization^a

21 (6)

Received prior intrauterine insemination

49 (13)

Patients of Dr. Carpentier

316 (85)

Patients of Dr. Rollo

54 (15)