Early postoperative negative conversion of Helicobacter pylori stool antigen after distal gastrectomy and potential host-related factors

Table 2 Comparison between persistent infection and early negative conversion groups, n (%)/mean ± SD

Variable	Total (n = 53)	Persistent (n = 13)	Negative conversion (n = 40)	P value
Age (years)	62.4 ± 11.7	61.5 ± 9.9	62.7 ± 12.4	0.711
Sex, male	39 (73.6)	8 (61.5)	31 (77.5)	0.292
Body mass index (kg/m2)	24.5 ± 3.3	24.3 ± 3.9	24.6 ± 3.1	0.809
American Society of Anesthesiologists score (continuous)	2.0 ± 0.7	1.7 ± 0.5	2.1 ± 0.7	0.024
Diabetes mellitus	15 (28.3)	1 (7.7)	14 (35.0)	0.08
Hypertension	17 (32.1)	2 (15.4)	15 (37.5)	0.183
Chronic kidney disease	2 (3.8)	0 (0.0)	2 (5.0)	1
Serum albumin (g/dL)	4.2 ± 0.4	4.2 ± 0.5	4.2 ± 0.4	0.804
Hemoglobin (g/dL)	13.2 ± 2.0	13.8 ± 1.5	13.0 ± 2.1	0.168
Follow-up time (days after surgery)	110.8 ± 19.4	106.5 ± 7.8	112.2 ± 21.8	0.169
Postoperative proton pump inhibitor use	2 (3.8)	0 (0.0)	2 (5.0)	1
Postoperative antibiotics use	8 (15.1)	1 (7.7)	7 (17.5)	0.662
Operation time (minutes)	165.8 ± 50.3	169.6 ± 41.8	164.5 ± 53.2	0.724
Estimated blood loss (mL)	97.2 ± 74.0	75.1 ± 29.7	104.5 ± 82.6	0.063
Postoperative complications (Clavien-Dindo ≥ II)	9 (17.0)	1 (7.7)	8 (20.0)	0.424

Continuous variables compared using Welch’s t test. Categorical variables compared using Fisher’s exact test.