Clinical characteristics of lactational breast abscess caused by methicillin-resistant Staphylococcus aureus: hospital-based study in China

Table 4 Comparison of the characteristics of participants in which MRSA and MSSA were isolated from their lactational breast abscess

Variables	MRSA group (n = 260)	MSSA group (n = 962)	χ²	P - value
Hospitalization (%)			0.012	0.488
Residential treatment	44 (16.9%)	160 (16.6%)
Outpatient treatment	216 (83.1%)	802 (83.4%)
Postpartum period (%)			0.269	0.328
Puerperium^a	149 (57.3%)	534 (55.5%)
Non-puerperium	111 (42.7%)	428 (44.5%)
Location of abscess cavities (%)			0.738	0.218
Central area^b	66 (25.4%)	270 (28.1%)
Non-central area	194 (74.6%)	692 (71.9%)
Number of abscess cavities (%)			2.063	0.088
Single cavity	180 (69.2%)	709 (73.7%)
Multiple cavities^c	80 (30.8%)	253 (26.3%)
Failure of aspiration^d (%)			0.331	0.336
Failed	17 (6.5%)	73 (7.6%)
Non-failed	243 (93.5%)	889 (92.4%)
Antibiotic use (%)			0.003	0.512
Yes	82 (31.5%)	305 (31.7%)
No	178 (68.5%)	657 (68.3%)
Cessation of breastfeeding (%)			5.290	0.018
Cessation	28 (10.8%)	63 (6.5%)
Non-cessation	232 (89.2%)	899 (93.5%)
Recurrence^e(%)			0.390	0.359
Recurrent	5 (1.9%)	25 (2.6%)
Non-recurrent	255 (98.1%)	937 (97.4%)

^aPuerperium: within 42 days of giving birth.
^bCentral area: the abscess located in the areola area.
^cMultiple cavities: the number of cavities are more than 1.
^dFailure of aspiration: the patient’s symptoms do not resolve and are eventually treated with other surgical methods.
^eRecurrence refers to the recurrence of an abscess at the original site within one month

ISSN: 1746-4358