Phosphate concentrations in follicular fluid during assisted reproductive treatment: relevance for ovarian function and fertility outcomes

Table 1 Baseline characteristics of the study population

	All Mean (SD) n = 110	Live Birth: No Mean (SD) n = 77	Live Birth: Yes Mean (SD) n = 33	P-value
Age, (years)	36 (4)	37 (4)	35 (5)	0.089
BMI, (kg/m²)	24 (3)	24(3)	24 (3)	0.604
Smoking, no. (%)	7 (6%)	3 (4%)	4 (12%)	0.240
ICSI treatment, no. (%)	59 (54%)	36 (47%)	23 (70%)	0.045
Male infertility, no. (%)	62 (56%)	39 (50%)	23 (70%)	0.102
Female infertility, no. (%)	89 (81%)	62(81%)	27 (82%)	1.000
Follicular phosphate (mmol/L)	1.18 (0.2)	1.18 (0.2)	1.18 (0.2)	0.915
Follicular calcium (mmol/L)	2.23 (0.2)	2.24 (0.2)	2.21 (0.2)	0.876
Follicular testosterone (nmol/L)	27.1 (21.7;32.2)	26.3 (21.2;33.8)	27.6 (23.5;31.6)	0.928
Serum phosphate (mmol/L)	1.06 (0.2)	1.04 (0.2)	1.10 (0.2)	0.335
Serum calcium (mmol/L)	2.36 (0.1)	2.36 (0.1)	2.36 (0.1)	0.832
Serum testosterone (nmol/L)	1.26 (0.93;1.91)	1.32 (0.87;1.92)	1.19 (0.94;1.53)	0.864

Data from either the women’s first visit or the visit in which they achieved a pregnancy that led to a live birth. Data is presented as mean (SD) except testosterone which is presented as median (IQR). For serum, n = 38 for all, n = 29 for live birth: no, and n = 9 for live birth: yes
BMI Body mass index, ICSI Intracytoplasmic sperm injection, IQR Interquartile range

ISSN: 1477-7827