Table 2.

Maximum degree of infection during follow-up, according to the Maz Oxford Nuffield classification

Variable	Global (n=132)	Coating		p
		Yes (n=35)	No (n=97)
Follow-up time& (days)	187 (91–317)	207 (154–379)	174 (90–290)	0.054
Maz-Oxford-Nuffield infection score				0.887
1	69 (52.3%)	19 (54.3%)	50 (51.5%)
2	42 (31.8%)	10 (28.6%)	32 (33.0%)
3	21 (15.9%)	6 (17.1%)	15 (15.5%)

Values are expressed as medians (25th percentile–75th percentile) or the absolute and relative frequency. ^&Follow-up time: time frame between the first patient`s medical examination and EF removal or end of the study