Figure 1.

Co-occurrence of mid-trimester tumor necrosis factor-alpha (TNF-α) in the 4^th quartile (4Q) and lipid risk^a in pregnancies resulting in early preterm birth^b.

^aTotal cholesterol (TC), low-density lipoprotein (LDL), triglycerides (TGs), TG: highdensity (HDL), or LDL:HDL in the 4Q and/or HDL or HDL:TC ratio in the 1^st quartile (1Q).

^bCompared to pregnancies ending in term birth, adjusted for gestational week and maternal weight at serum draw.