Supplemental Table 1: Demographics and characteristics of FBI during the pre-COVID, months prior to COVID, and COVID cohorts

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Supplemental Table 1: Demographics and characteristics of FBI during the pre-COVID, months prior to COVID, and COVID cohorts

Categorical variables are expressed in frequency (percentage) and continuous variable as median (25^th-75^th

percentiles). FBI = foreign body ingestion; COVID = coronavirus disease 2019; ED = emergency department; GI = gastrointestinal; XR = radiographic imaging

a pre-COVID (March - July 2019); months prior to COVID (October 2019 - Mar2020); COVID (Mar-July 2020) The first date examined in both cohorts was March 5^th, as this was the date of the first COVID case in Tennessee.

b Patients may have had more than 1 complication. Percentage may not add up to 100.

Variable pre-COVID^a Mar-July 2019

(n=30)

Months prior to COVID^a Oct 2019-Mar 2020

(n=43)

COVID^a (n=42)

p-value

Male 19 (63.3) 23 (53.5) 26 (61.9) 0.63

Age (months) 63.8 (28.6-128.5) 43.4 (23.3-93.6) 62.5 (46.2-96.2) 0.13

Age by Category 0.63

< 1 year 3 (10.0) 5 (11.6) 1 (2.4)

1 – 5.99 year 16 (53.3) 25 (58.1) 23 (54.8)

6- 12.99 year 5 (16.7) 7 (16.3) 11 (26.2)

13-17.99 year 6 (20.0) 6 (14.0) 7 (16.7)

Encounter Location 0.70

ED 28 (93.3) 40 (93.0) 36 (85.7)

Inpatient 1 (3.3) 2 (4.7) 2 (4.8)

Endoscopy Suite 1 (3.3) 1 (2.3) 4 (9.5)

Type of Foreign Body 0.56

Coin 16 (53.3) 14 (32.6) 17 (40.5)

Sharp Object 3 (10.0) 3 (7.0) 1 (2.4)

Multiple Magnets 1 (3.3) 5 (11.6) 4 (9.5)

Button Battery 3 (10.0) 5 (11.6) 5 (11.9)

Screw 2 (6.7) 4 (9.3) 1 (2.4)

Other 5 (16.7) 12 (27.9) 14 (33.3)

Location in GI Tract on XR

0.05

Esophagus 17 (56.7) 13 (30.2) 9 (21.4)

Stomach 7 (23.3) 17 (39.5) 19 (45.2)

Post-pyloric 6 (20.0) 9 (20.9) 12 (28.6)

Not identified 0 (0.00) 4 (9.3) 2 (4.8)

Admitted 7 (23.3) 17 (39.5) 12 (28.6) 0.30

Discharged home without intervention

9 (30.00) 10 (23.3) 18 (42.9) 0.15

Required Endoscopy 21 (70.0) 32 (74.4) 22(52.4) 0.08

Required Surgery 0 (0.0) 2 (4.6) 1 (2.4) 0.78

Complication ^{b, c} 3 (10.0) 7 (16.3) 5 (11.9) 0.78

Perforation 0 (0.0) 0 (0.0) 0 (0.0) ---

Bleeding 1 (3.3) 0 (0.0) 0 (0.0) 0.26

Mucosal Injury 0 (0.0) 5 (11.6) 4 (9.5) 0.14

Fistula 0 (0.0) 1 (2.3) 1 (2.4) 1.0

Stricture 0 (0.00) 0 (0.00) 0 (0.0) ---

Obstruction 0 (0.00) 1 (2.3) 0 (0.0) 1.0

Tissue Necrosis 2 (6.7) 0 (0.0) 0 (0.0) 0.07

Bowel Resection 0 (0.0) 0 (0.0) 1 (2.4) .63

Objects Not Retrieved on Endoscopy

1 (3.33) 3 (7.0) 3 (7.1) 0.79

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c Calculated as a binary variable. Reported as those that experienced complication.

* Denotes p-value <0.05