Table 1 Overview of cohort demographics

Week, N(%)

Weekend, N (%)

P (effect size)

Age

62 ± 18 years

59 ± 20 years

<.001 (0.15)

Sex

Male

6863 (57)

2485 (57)

0.76 (0.002)

Female

5197 (43)

1861 (43)

Ethnicity

White

8264 (68)

2881 (66)

0.01 (0.03)

Black/African American

961 (8)

335 (8)

Hispanic/Latino

434 (4)

169 (4)

Asian

284 (2)

104 (2)

Other

335 (3)

159 (4)

Unknown

1782 (15)

698 (16)

Time of day

12:00 AM - 7:59 AM

2375 (19)

1172 (27)

<.001 (0.08)

8:00 AM - 5:59 PM

5015 (42)

1624 (37)

6:00 PM - 11:59 PM

4670 (39)

1550 (36)

Direct ICU admit?

Yes

8668 (72)

3298 (76)

<.001 (0.04)

No

3392 (28)

1048 (24)

Diagnosis

Diseases of the circulatory system

4287 (36)

1205 (28)

<.001 (0.10)

Injury and poisoning

2543 (21)

1184 (27)

Diseases of the digestive system

1155 (10)

468 (11)

Infectious and parasitic diseases

968 (8)

416 (10)

Diseases of the respiratory system

1044 (9)

376 (9)

Endocrine/nutritional diseases*

358 (3)

144 (3)

Neoplasms

532 (4)

137 (3)

Mental Illness

299 (2)

137 (3)

Diseases of the nervous system*

313 (3)

111 (2)

Genitourinary system diseases

228 (2)

75 (2)

Ill-defined conditions*

79 (< 1)

29 (< 1)

Diseases of the blood*

46 (< 1)

18 (< 1)

Musculoskeletal system diseases*

84 (< 1)

17 (< 1)

Diseases of the skin*

40 (< 1)

10 (< 1)

Complications of pregnancy*

30 (< 1)

10 (< 1)

Congenital anomalies

41 (< 1)

8 (< 1)

Residual codes

13 (< 1)

1 (< 1)

OASIS severity score (min, med, max)

(0.65, 9.78, 92.38)

(0.65, 9.78, 94.0)

0.49 (0.01)

Service

Medical

7896 (65)

2897 (67)

<.001 (0.09)

Surgical

2875 (24)

766 (18)

Trauma

1160 (10)

630 (14)

Other

129 (1)

53 (1)