a decreasing trendP -value = 0.0101
50 We observed a reduction of 3-hydroxybutyrate concentration ( P -value = 3 × 10 –5 and FDR = 0.0043) in patients with the PFO; there are also a decreasing trend for glucose ( P -value = 0.0101 and FDR = 0.0683) and an increase of acetone ( P -value = 0.0007 and FDR = 0.0129) which are, however, not significant after adjustment.