Variable BPD Absent BPD Present Total P value
Total, n (%) 182 (57) 136 (43) 318 (100) -
Age at tracheostomy, mo. (IQR) 24.5 (4.2-127.6) 5.2 (3.9-7.1) 6.9 (4.1-49.2) <.001
Gestational Age, mo. (IQR) 38.0 (36.0-40.0) 28.0 (25.0-37.0) 36.0 (28.0-39.0) <.001
Birth Weight, kilograms, IQR 2.9 (2.4-3.4) 1.1 (0.76-2.4) 2.4 (1.1-3.1) <.001
Weight at tracheostomy, kg. (IQR) 10.3 (5.4-28.0) 5.1 (4.1-6.4) 6.2 (4.5-14.5) <.001
Corrected age, mo. (IQR) 7.9 (-4.8-99.3) -0.89 (-3.0-0.53) -0.20 (-3.9-28.5)
Sex, n (%)
Female 91 (50) 57 (42) 148 (47) .15
Male 91 (50) 79 (58) 170 (54)
Race, n (%)
American Indian/Alaska Native 0 (0) 1 (0.7) 1 (0.3) .004
Asian 7 (3.8) 8 (5.9) 15 (4.7)
Black or African American 45 (25) 60 (44) 105 (33)
White 116 (64) 59 (43) 175 (55)
More Than One Race 4 (2.2) 2 (1.5) 6 (1.9)
Unknown / Not Reported 10 (5.5) 6 (4.4) 16 (5.0)
Ethnicity, n (%)
Hispanic 59 (32) 37 (27) 96 (30) .32
Not Hispanic 123 (68) 98 (72) 221 (70)
Unknown / Not Reported 0 (0) 1 (0.7) 1 (0.3)
Primary Language, n (%)
English 153 (85) 117 (87) 270 (86) .24
Spanish 26 (14) 13 (9.7) 39 (12)
Other 2 (1.1) 4 (3.0) 6 (1.9)
Primary Payer, n (%)
Medicaid 134 (74) 107 (79) 241 (76) .57
Private 44 (24) 27 (20) 71 (22)
Other 4 (2.2) 2 (1.5) 6 (1.9)
Economic connectiveness, (IQR) 0.76 (0.58-0.94) 0.72 (0.55-0.90) 0.73 (0.58-0.92) .17
Support ratio, (IQR) 0.86 (0.81-0.96) 0.83 (0.79-0.90) 0.85 (0.81-0.94) .02
Fraction single parents, (IQR) 0.36 (0.26-0.38) 0.38 (0.28-0.38) 0.37 (0.28-0.38) .27
Median Household Income, USD (IQR) 53442 (48901-62463) 53442 (53442-62178) 53442 (49530-62463) .89