Table 1.
Study Population stratified by CDC BMI category
| Severely Underweight (<5%) |
Underweight (5–15%) |
Normal (5–85%) |
Overweight (85–95%) |
Obese (>95%) |
p | |
|---|---|---|---|---|---|---|
| n | 1694 | 1352 | 9637 | 2789 | 2865 | |
| Age (years) | 15.4 (12.5, 19.1) | 15.1 (12.5, 18.3) | 15.9 (13.1, 19.9) | 16.3 (13.4, 21.6) | 16.2 (13.4, 20.7) | <0.0001 |
| Female sex | 36% (608) | 40% (536) | 45% (4305) | 47% (1301) | 37% (1069) | <0.0001 |
| Race | ||||||
| White | 63% (1060) | 65% (881) | 65% (6241) | 65% (1801) | 61% (1751) | <0.0001 |
| Black | 14% (244) | 13% (177) | 13% (1253) | 12% (344) | 16% (458) | |
| Hispanic | 10% (161) | 11% (153) | 11% (1070) | 13% (361) | 14% (411) | |
| Asian | 5% (88) | 4% (56) | 4% (347) | 3% (73) | 2% (49) | |
| Other | 6% (108) | 5% (64) | 5% (525) | 6% (159) | 6% (160) | |
| Weight (kg) | 38 (29, 48) | 43 (33, 52) | 55 (44, 65) | 69 (58, 80) | 87 (72, 102) | <0.0001 |
| Height (cm) | 157 (144, 170) | 158 (144, 169) | 162 (152, 171) | 162 (153, 171) | 164 (153, 173) | <0.0001 |
| Body mass index (kg/m2) | 15.4 (14.0, 16.9) | 17.0 (15.6, 18.5) | 20.6 (18.7, 22.7) | 26.3 (23.9, 28.1) | 32.0 (28.9, 35.6) | |
| Chromosomal abnormalities | 5% (84) | 5% (66) | 5% (512) | 8% (215) | 11% (301) | <0.0001 |
| Non-cardiac anatomic abnormalities | 12% (205) | 8% (106) | 5% (470) | 4% (111) | 4% (125) | <0.0001 |
| Genetic syndrome | 19% (322) | 14% (195) | 11% (1102) | 13% (358) | 15% (415) | <0.0001 |
| Number of prior cardiac operation(s) | 1 (0, 2) | 1 (0, 2) | 1 (0, 2) | 1 (0, 2) | 1 (0, 2) | <0.001 |
| STAT mortality category | ||||||
| 1 | 33% (557) | 39% (530) | 40% (3875) | 38% (1061) | 38% (1100) | <0.0001 |
| 2 | 38% (641) | 35% (474) | 38% (3621) | 40% (1110) | 39% (1110) | |
| 3 | 11% (190) | 11% (151) | 9% (815) | 8% (214) | 8% (239) | |
| 4/5 | 18% (306) | 15% (197) | 14% (1326) | 15% (404) | 15% (416) | |
| Preoperative condition | ||||||
| Hypercoagulable state | 1% (12) | 1% (12) | 1% (56) | 1% (15) | 1% (23) | 0.47 |
| Hypocoagulable state not secondary to medication | 1% (14) | 2% (20) | 1% (67) | 1% (27) | 1% (21) | 0.04 |
| Hypocoagulable state secondary to medication | 3% (55) | 3% (35) | 2% (207) | 2% (63) | 2% (66) | 0.09 |
| Diabetes mellitus | ||||||
| Diabetes mellitus – Type I | 1% (14) | 0.4% (6) | 1% (58) | 1% (21) | 1% (17) | 0.62 |
| Diabetes mellitus – Type II | 0.1% (1) | 0% (0) | 0.1% (13) | 0.2% (6) | 0.6% (18) | <0.0001 |
| Renal failure | 2% (29) | 2% (22) | 1% (106) | 1% 932) | 1% (37) | 0.16 |
| Mechanical ventilation | 2% (34) | 1% (19) | 1% (111) | 1% (23) | 2% (42) | 0.007 |
| Mechanical circulatory support | 1% (23) | 1% (16) | 1% (78) | 1% (24) | 1% (38) | 0.04 |
| Persistent shock | 0.4% (7) | 1% (9) | 0.4% (34) | 1% (15) | 1% (23) | 0.03 |
| Stroke or intracranial hemorrhage within 48 hours preceding operation | 5% (77) | 4% (57) | 3% (273) | 3% (79) | 3% (85) | 0.0004 |
Data are presented as % (n) or median (interquartile range).