Leaving no stone unturned: Impact of appendicolith and characteristics on long-term recurrence after non-operative appendicitis

Table 3 Comparison of recurrence vs non-recurrence after non-operative management, n (%)

Variable		Total (n = 797)	No recurrence (n = 640)	Recurrence (n = 157)	P value
Gender	Female	362 (45.4)	290 (45.4)	72 (45.6)	0.91
	Male	434 (54.5)	349 (54.6)	85 (53.8)
Age (years) mean ± SD		25.4 ± 14.4	25.5 ± 13.7	25.4 ± 14.6	0.96
Length of pain prior to admission (hours), mean ± SD		39.3 ± 61.5	38.8 ± 59.0	41 ± 70.6	0.70
Fever at home		79 (9.9)	68 (10.6)	11 (7.0)	0.17
Temperature at admission (Celsius), mean ± SD		36.7 ± 0.6	36.7 ± 0.6	36.7 ± 0.5	0.77
Heart rate on admission, mean ± SD		89.0 ± 19.5	88.2 ± 18.0	89.2 ± 19.8	0.59
White blood count (× 109/L), mean ± SD		11.4 ± 3.9	11.3 ± 3.9	11.8 ± 4.0	0.14
C-reactive protein (mg/dL), mean ± SD		3.3 ± 5.3	3.2 ± 5.3	3.5 ± 5.7	0.60
Ultrasound performed		462 (58.0)	379 (59.3)	83 (52.5)	0.12
Computed tomography performed		460 (57.7)	367 (57.4)	93 (59.0)	0.75
Appendicolith		68 (8.5)	50 (7.8)	18 (11.5)	0.08
Radiological findings	Largest appendix diameter (mm), mean ± SD	8.7 ± 2.4	8.6 ± 2.4	9.1 ± 2.6	0.03
	Free fluid on imaging	229 (28.7)	178 (27.9)	51 (32.3)	0.32
Length of stay, median (interquartile ranges) (day)		2.6 (2-3)	2.6 (2-3)	2.7 (2-3)	0.53