. 2020 Aug 26;43(12):1910–1917. doi: 10.1007/s00270-020-02622-2

Table 1.

Baseline characteristics in the post-UFE infection group vs the background UFE population

Characteristic	Infection patients (n = 25)	Background UFE population	P value
Age, n = 333	49 (44–53)⁺	48 (45–51)⁺	0.580^a
Parity, n = 301
Nulliparous	5 (23%)	120 (43%)	0.102^b
Parity ≥ 1	17 (77%)	159 (57%)	0.102^b
Presence of menorrhagia, n = 326
Yes	23 (92%)	259 (86%)	0.775^c
No	2 (8%)	42 (14%)	0.775^c
Presence of pressure symptoms, n = 319
Yes	18 (78%)	222 (75%)	0.120^c
No	5 (22%)	74 (25%)	0.120^c
Anterior wall fat (cm), n = 234	4.5 (2.8–6.6)⁺	3.2 (2.5–4.0)⁺	0.012^a
Number of fibroids, n = 286
≤ 8 fibroids	13 (59%)	137 (52%)	0.669^b
> 8 fibroids	9 (41%)	127 (48%)	0.669^b
Dominant fibroid diameter (cm), n = 286	7.8 (5.8–11.0)	7.0 (5.5–9.5)	0.181^a
Dominant fibroid type, n = 286
Submucosal	2 (9%)	16 (6%)	N/A
Intramural	14 (64%)	187 (71%)
Subserosal	6 (27%)	61 (23%)
Presence of a submucosal component, n = 286
Yes	9 (41%)	115 (44%)	0.986^b
No	13 (59%)	149 (56%)	0.986^b
Fibroid load in the endometrial cavity (cm), n = 286	0 (0–1.70)⁺	0 (0–2.53)⁺	0.583^a
Uterine volume (cm³), n = 286	1165 (540–1721)⁺	825 (527–1204)⁺	0.049^a
Amount of embolisation agent (vials), n = 179
≤ 4 vials	5 (38%)	105 (63%)	0.141^b
> 4 vials	8 (62%)	61 (37%)	0.141^b
Size of embolisation particles (microns),n = 255
≤ 500	14 (70%)	182 (77%)	0.630^b
> 500	6 (30%)	53 (33%)	0.630^b

⁺denotes where continuous data presented as median (interquartile range), all other categorical data are presented as number of patients (percentage). The number of patients for which data were available is indicated in the first column

^aDenotes where Mann–Whitney-U tests were used for statistical analysis

^bDenotes where Chi-squared tests on independence used for statistical analysis. Yates’ continuity correction was used when there were less than 3 categories. ^cDenotes where Fisher exact test was used

Due to an incomplete data set, not all patients could be included in all analyses