Table 1 Inclusion criteria and cohort characteristics

Inclusion Criteria

Age at Admission

≥ 28 days and < 18 years

≥ 28 days and < 18 years

≥ 18 years

Admission Date

2018-06-02 to 2022-08-01

2018-06-02 to 2022-08-01

2018-06-02 to 2022-08-01

Cohort Characteristics

Number Admissions

59,298

24,639

159,985

Number Patients

36,585

14,518

103,170

Median Age at Admission [IQR]

6 [2–12]

6 [2–12]

57 [36–71]

Pediatric Age Group, n (%)

 Infant (28 days– 12 months)

8980 (15.1%)

3869 (15.7%)

 Toddler (13 months– 2 years)

5661 (9.5%)

2269 (9.2%)

 Early childhood (2–5 years)

10,263 (17.3%)

4307 (17.5%)

 Middle childhood (6–11 years)

14,837 (25.0%)

6056 (24.6%)

 Early adolescence (12–17 years)

19,557 (33.0%)

8138 (33.0%)

Sex, n (%)

 Females

27,264 (46.0%)

11,800 (47.9%)

91,770 (57.4%)

 Males

32,030 (54.0%)

12,837 (52.1%)

68,207 (42.6%)

 Unknown

4 (< 0.1%)

2 (< 0.1%)

15 (< 0.1%)

Patient Outcomes

 In-hospital mortality, n (%)

297 (0.5%)

203 (0.8%)

3088 (1.9%)

 Median length of stay [IQR]

2 [1–5]

3 [1–6]

3 [2–6]