Comparison of Placenta Previa and Placenta Accreta Spectrum Disorder Following Previous Cesarean Section between Women with a Short and Normal Interpregnancy Interval

Table 2

Clinical characteristics of the study participants.

Variables	Normal IPI (n = 124)	Short IPI (n = 124)	Test stat	-value
Parity			U = 7633.00	0.20
Mean (SD)	2.19 (1.18)	2.13 (0.10)
95% CI	1.98–2.40	1.95–2.30
Median	2.00	2.00
Min-Max	1.00–7.00	1.00–5.00
Number of C/S			U = 7410.50	0.57
Mean (SD)	1.48 (0.73)	1.52 (0.72)
95% CI	1.35–1.61	1.39–1.65
Median	1.00	1.00
Min-Max	1.00–4.00	1.00–4.00
Mean gestational age at booking (weeks)			U = 6854.50	0.14
Mean (SD)	18.12 (5.99)	19.19 (5.77)
95% CI	17.06–19.19	18.16–20.21
Median	17.50	18.00
Min-Max	7.00–31.00	7.00–32.00
Mean systolic BP (mmHg)			U = 6939.50	0.17
Mean (SD)	106.21 (13.10)	108.4 (11.97)
95% CI	103.98–108.54	106.30–110.60
Median	110.00	110.00
Min-Max	80.00–140.00	80.00–140.00
Mean diastolic BP (mmHg)			U = 6194.50	0.005
Mean (SD)	64.52 (9.89)	67.30 (7.82)
95% CI	62.76–66.27	65.91–68.69
Median	60.00	70.00
Min-Max	50.00–95.00	50.00–90.00
Body mass index			χ^2 = 1.16	0.76
Underweight	0 (0.0%)	1 (0.8%)
Normal	4 (3.2%)	3 (2.4%)
Overweight	28 (22.6%)	27 (22.0%)
Obese	92 (74.8%)	92 (74.8%)
Pregnancy intention			χ^2 = 36.54	<0.001
Intended	57 (46.0%)	102 (82.3%)
mistimed	61 (49.2%)	18 (14.5%)
Unwanted	6 (4.8%)	4 (3.2%)

NB: IPI = interpregnancy interval, SD = standard deviation, CI = confidence interval, U = Mann–Whitney U-test.