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. Author manuscript; available in PMC: 2022 Dec 1.
Published in final edited form as: Pediatr Crit Care Med. 2021 Dec 1;22(12):1061–1071. doi: 10.1097/PCC.0000000000002800

Table 2.

Patient Study Characteristics

All Studies
n=161
Studies targeting enrollment of traumatic brain injury patients
n=70
Studies which did not target traumatic brain injury patients
n=91
Population Studied, n (%)
 Traumatic Brain Injury 70 (43.5%) 70 (100.0%) 0 (0%)
 General PICU 26 (16.2%) 0 (0%) 26 (28.6%)
 Cardiac Arrest 10 (6.2%) 0 (0%) 10 (11.0%)
 Sepsis 10 (6.2%) 0 (0%) 10 (11.0%)
 Congenital heart disease 8 (5.0%) 0 (0%) 8 (8.8%)
 Trauma 7 (4.4%) 1 (1.4%) 6 (6.6%)
 Acute respiratory failure 2 (1.2%) 0 (0%) 2 (2.2%)
 Solid organ transplant 2 (1.2%) 0 (0%) 2 (2.2%)
 Oncology/Bone marrow transplant 2 (1.2%) 0 (0%) 2 (1.2%)
 Other 37 (23.0%) 0 (0%) 34 (37.4%)
Percent Males Enrolled, Median (IQR) 62.0 (54.7–67.7) 66.7 (61.6–74.0) 58.3 (50.5–62.5)
Family Members Evaluated, n (%)
 Anya 18 (11.2%) 2(2.9%) 16 (17.6%)
 Parent/Grandparent 18 (11.2%) 2 (2.9%) 16 (17.6%)
Mortality measured during post-discharge follow-up, n (%) 89 (55.3%) 35 (50.0%) 54 (59.3%)
Died during post-discharge follow-up, median % (IQR) 2.4
(0.0–11.8)
0.0
(0.0–4.4)
4.1
(0.0–17)
Study Locationb, n (%)
 United States 50 (31.1%) 26 (37.1%) 24 (26.4%)
 Australia 19 (11.8%) 6 (8.6%) 13 (14.3%)
 United Kingdom 18 (11.2%) 5 (7.1%) 13 (14.3%)
 Canada 16 (9.9%) 2 (2.9%) 14 (15.4%)
 Other Europe 31 (19.2%) 8 (11.4%) 23 (25.3%)
 Other 47 (29.2%) 28 (40.0%) 19 (20.9%)
Enrolled sample size, median (IQR) 58.5 (34–120) 48 (29.0–85.5) 71.5 (37.0–150.0)
Enrollment rate, median % (IQR) 94.2 (66.1–100.0) 100.0 (76.9–100.0) 84.3 (58.3–100.0)
Enrollment rate not specified, n (%) 31 (19.3%) 18 (25.7%) 13 (14.3%)
Patients eligible for follow-up at hospital discharge, median (IQR) 50 (27–118) 45 (28.0–81.0) 66.5 (27.0–170.0)
Percent assessed at final point, median (IQR) 90.5 (71.5–100.0) 95.8 (81.1–100.0) 82.3 (66.5–98.7)
Number of participants assessed at final follow-up, median (IQR) 45 (21–83) 40.0 (22.0–69.0) 50.0 (21.0–114.0)
Number of overall health specific instruments per article, median (IQR) 2 (1–4) 2 (1–3) 2 (1–4)
Number of instruments per article, n (%)
 1 59 (36.6%) 34 (48.6%) 25 (27.5%)
 2–4 76 (47.2%) 24 (34.3%) 52 (57.1%)
 5–7 11 (6.8%) 3 (4.3%) 8 (8.8%)
 8–10 13 (8.1%) 7 (10.0%) 6 (6.6%)
 >10 2 (1.2%) 2 (2.9%) 0 (0.0%)

n (%) is presented for categorical variables and median (interquartile range) is presented for continuous characteristics.

a

No siblings were specifically evaluated in studies measuring overall health.

b

Groups are not mutually exclusive due to inclusion of studies conducted internationally.