Table 2. Biological and cCTG parameters in cases of pPROM with or without HC.

Biological parameters	Chorioamnionitis (n = 10)	Control (n = 13)	p
C-Reactive protein at admission (mg/l)	2 (2; 5.8)	4 (3; 16)	0.22
Leucocytes count at admission (G/mm3)	11.4 (10; 12.4)	12 (10.4; 13)	0.77
Last C-Reactive protein before delivery	8 (5; 17.3)	4 (1.6; 15)	0.2
Bacterially positive vaginal swab	30%	33.3%	1
cCTG parameters
Recordings of the last 72h before delivery
No. of fetal movements/h	29.9 (16.8; 48.1)	23.3 (8.6; 63.8)	0.78
Baseline heart rate (bpm)	147.3 (144.2; 149.2)	141.3 (137.1; 145.4)	0.02
No. of accelerations > 10 bpm/15s	3.7 (2.7; 5)	4 (2.6; 5)	0.76
No. of accelerations > 15 bpm/15s	0.8 (0.3; 2)	1 (0.6; 3.3)	0.32
No. of decelerations > 20 bpm/30s	0.2 (0; 0.3)	0.2 (0; 0.2)	0.82
Episodes of high variation (n)	6.3 (3.8; 7.4)	9.2 (6.2; 11.6)	0.06
Episodes of low variation (n)	6.4 (3.5; 15.3)	2.3 (1; 5.2)	0.04
Short term variation (ms)	7.1 (6; 7.4)	8.1 (7.4; 9)	0.01
Last recording before delivery
Short term variation of the last recording (ms)	5.1 (3.7; 5.9)	7.8 (5.4; 8.7)	0.007
Temporal indices*
Short term variation temporal index (ms)	0.7 (0.7; 0.9)	1.1 (0.9; 1.2)	0.003
High variation temporal index	-3.9 (-4.9; -3.2)	-0.8 (-1.5; -0.2)	< 0.001

WG: weeks of gestation; pPROM: preterm premature rupture of membranes; cFHR: computerized fetal heart rate; bpm: beats per minute; s: second; ms: milliseconds

* Mean value of the last two recordings divided by the mean value of the preceding recordings

Results are expressed as the median and interquartile range (25%; 75%). The Mann-Whitney U test and Fisher’s exact test were used, where appropriate.