Table 1.

Baseline characteristics of women and men in the entire study population

	Women (N = 113)	Missing	Men (N = 41)	Missing
Age, years	32.4 (29.1–35.1)	0	34.0 (29.5–41.5)	0
Ethnicity
Western	95 (84%)	0	41 (100%)
Non-Western	18 (16%)		0 (0%)
Education
Low	8 (7%)	0	3 (7%)
Middle	47 (42%)		14 (34%)
High	58 (51%)		24 (59%)
BMI (measured), kg/m2	23.2 (21.7–26.0)	4	24.0 (22.6–27.5)	0
BMI category
< 25	66 (59%)	1	24 (59%)	0
≥ 25	46 (41%)		17 (41%)
Diagnosis category:		0		0
Only male factor	92 (81%)		32 (78%)
Of which surgically retrieved sperm	51		17
Only female factor	2 (2%)		1 (2%)
Anovulation	2		1
Tubal pathology	0		0
Both male and female	17 (15%)		7 (18%)
Of which surgically retrieved sperm	6		3
Anovulation	16		6
Tubal pathology	1		1
Unexplained	2 (2%)		1 (2%)
Time between activation Smarter Pregnancy and oocyte retrieval, days	49 (35–126)	0	45 (34.5–97)	0
Vegetable risk score
0 (≥ 200 g/day)	31 (28%)	3	14 (34%)	0
1.5 (150–199 g/day)	22 (20%)		8 (20%)
3 (< 150 g/day)	57 (52%)		19 (46%)
Fruit risk score
0 (≥ 2 pieces/day)	46 (42%)	4	18 (44%)	0
1.5 (1,5–1.9 pieces/day)	13 (12%)		8 (20%)
3 (< 1.5 pieces/day)	50 (46%)		15 (36%)
Folic acid risk score
0 (0.4 mg/day)	111 (98%)	0	n/a
3 (no usage)	2 (2%)
Smoking risk score
0 (no smoking)	107 (98%)	4	38 (93%)	0
1 (1–5 cigarettes/day)	0 (0%)		0 (0%)
3 (6–14 cigarettes/day)	2 (2%)		2 (5%)
6 (≥ 15 cigarettes/day)	0 (0%)		1 (2%)
Alcohol risk score
0 (no alcohol)	67 (61%)	4	13 (32%)	0
1.5 (1–2 units/day)	39 (36%)		24 (59%)
3 (≥ 2 units/day)	3 (3%)		4 (9%)

Data are presented as medians (IQR) or number of subjects (%). IQR, interquartile range; BMI, body mass index