Table 1 Summary Statistics – Demographics, SES Proxies, Resource Utilizations, and Diagnosis
Variables | Level | Not Readmitted | Readmitted |
|---|---|---|---|
n (%) or mean (sd) | n (%) or mean (sd) | ||
Gender | Male | 311,260 (50.60) | 45,338 (51.09) |
Female | 273,009 (44.38) | 39,194 (44.17) | |
Unknown | 30,861 (5.02) | 4205 (4.74) | |
Race/ethnicity | White | 304,559 (49.51) | 36,807 (41.48) |
Asian | 9205 (1.50) | 1163 (1.31) | |
Black/African American | 144,376 (23.47) | 14,833 (16.72) | |
Native American | 6537 (1.06) | 688 (0.78) | |
Hispanic | 19,201 (3.12) | 2120 (2.39) | |
Others/Unknown | 131,252 (21.34) | 33,126 (37.33) | |
Age | – | 5.73 (6.00) | 6.90 (5.95) |
Admission type | Emergency | 276,802 (45.00) | 27,986 (31.54) |
Elective | 97,886 (15.91) | 18,569 (20.93) | |
Urgent | 120,468 (19.58) | 15,880 (17.90) | |
Trauma | 1521 (0.25) | 51 (0.06) | |
Others | 118,453 (19.26) | 26,251 (29.58) | |
Admission source | Referral | 247,863 (40.29) | 36,602 (41.25) |
Emergency/ER | 105,515 (17.15) | 9585 (10.80) | |
Transfer | 134,410 (21.85) | 10,618 (11.97) | |
Others | 127,342 (20.70) | 31,932 (35.98) | |
Length of stay | < 2 days | 154,703 (25.15) | 12,198 (13.75) |
< 4 days | 268,635 (43.67) | 24,353 (27.44) | |
< 7 days | 101,594 (16.52) | 16,549 (18.65) | |
7 days or more | 90,198 (14.66) | 35,637 (40.16) | |
Previous visits | 0 | 506,358 (82.32) | 31,389 (35.37) |
1 | 72,659 (11.81) | 15,502 (17.47) | |
2 | 18,949 (3.08) | 8895 (10.02) | |
3 or more | 17,164 (2.79) | 32,951 (37.13) | |
Previous maximum length of stay | < 2 days | 524,932 (85.34) | 36,463 (41.09) |
< 4 days | 34,051 (5.54) | 7349 (8.28) | |
< 7 days | 21,348 (3.47) | 9670 (10.9) | |
7 or more | 34,799 (5.66) | 35,255 (39.73) | |
Previous ED | 0 | 478,460 (77.78) | 62,745 (70.71) |
1 | 88,412 (14.37) | 13,094 (14.76) | |
2 | 27,999 (4.55) | 5347 (6.03) | |
3 or more | 20,259 (3.29) | 7551 (8.51) | |
Index visit is a readmission | Yes | 52,355 (8.51) | 43,633 (49.17) |
No | 562,775 (91.49) | 45,104 (50.83) | |
Readmission history | 0 | 587,646 (95.53) | 50,463 (56.87) |
1 | 14,808 (2.41) | 8518 (9.60) | |
2 | 5127 (0.83) | 5456 (6.15) | |
3 or more | 7549 (1.23) | 24,300 (27.38) | |
Diagnosis - ICD 10 | |||
Bacterial infections | – | 0.05 (0.27) | 0.07 (0.39) |
Blood and blood organs | – | 0.11 (0.50) | 0.25 (0.77) |
Central Nervous System | – | 0.20 (0.76) | 0.25 (0.86) |
Cerebrovascular blood vessels | – | 0.05 (0.47) | 0.06 (0.52) |
Conditions from perinatal period | – | 0.44 (1.98) | 0.22 (1.52) |
Congenital and chromosomal | – | 0.31 (1.28) | 0.36 (1.55) |
Digestive | – | 0.33 (1.23) | 0.43 (1.40) |
Ear, mastoid process | – | 0.05 (0.35) | 0.03 (0.29) |
Endocrine | – | 0.08 (0.56) | 0.08 (0.58) |
External causes of morbidity | – | 0.10 (0.52) | 0.07 (0.39) |
Eye and adnexa | – | 0.08 (0.80) | 0.08 (0.77) |
Genitourinary | – | 0.15 (0.68) | 0.15 (0.64) |
Hypersensitivity | – | 0.02 (0.19) | 0.04 (0.28) |
Immune mechanisms | – | 0.01 (0.13) | 0.02 (0.22) |
Injury and poison | – | 0.61 (8.44) | 0.39 (5.45) |
Ischemic heart disease | – | 0.00 (0.04) | 0.00 (0.04) |
Malnutrition | – | 0.01 (0.13) | 0.02 (0.16) |
Mental, behavioral, neurodevelopmental | – | 0.26 (1.49) | 0.22 (1.08) |
Metabolic and other endocrine process | – | 0.18 (0.67) | 0.24 (0.92) |
Musculoskeletal and connective tissues | – | 0.12 (0.62) | 0.12 (0.61) |
Neoplasms | – | 0.05 (0.32) | 0.34 (0.87) |
Other heart diseases | – | 0.04 (0.38) | 0.06 (0.47) |
Overweight and hyperalimentation | – | 0.01 (0.12) | 0.01 (0.12) |
Pregnancy, childbirth, puerperium | – | 0.08 (1.02) | 0.04 (0.74) |
Pulmonary heart disease | – | 0.03 (0.38) | 0.04 (0.49) |
Respiratory | – | 0.48 (1.14) | 0.35 (1.05) |
Rheumatic fever | – | 1.67 (0.02) | 1.47 (0.01) |
Rheumatic heart disease | – | 0.00 (0.08) | 0.00 (0.10) |
Skin, subcutaneous tissues | – | 0.14 (0.66) | 0.11 (0.58) |
Symptoms, signs, and abnormal lab findings | – | 0.82 (1.71) | 0.91 (1.94) |
Viral infections | – | 0.16 (0.79) | 0.16 (0.80) |
Health Hazards due to family/personal history | – | 0.24 (0.79) | 0.34 (0.98) |
Health Hazards - others | – | 0.26 (0.75) | 0.21 (0.57) |