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. Author manuscript; available in PMC: 2023 Jun 1.
Published in final edited form as: Med Care. 2022 Mar 16;60(6):444–452. doi: 10.1097/MLR.0000000000001708

Table 1.

Patient demographic and clinical characteristics

Clinical Subgroups
Characteristic, N (%) All Patients Cardiothoracic & Vascular General Medical/Surgical Neurological Oncology Orthopedic

Sample size 243,779 51,408 (21.1%) 105,308 (43.2%) 29,960 (12.3%) 7,384 (3.0%) 49,719 (20.4%)
Patient age
 18–53 30,867 (12.7%) 4,755 (9.2%) 12,275 (11.7%) 5,646 (18.8%) 901 (12.2%) 7,290 (14.7%)
 54–65 56,979 (23.4%) 10,685 (20.8%) 21,911 (20.8%) 7,687 (25.7%) 1,774 (24.0%) 14,922 (30.0%)
 66–75 67,708 (27.8%) 14,308 (27.8%) 27,647 (26.3%) 8,426 (28.1%) 2,085 (28.2%) 15,242 (30.7%)
 ≥76 88,225 (36.2%) 21,660 (42.1%) 43,475 (41.3%) 8,201 (27.4%) 2,624 (35.5%) 12,265 (24.7%)
Race
 White 183,424 (75.2%) 37,494 (72.9%) 76,476 (72.6%) 22,827 (76.2%) 5,625 (76.2%) 41,002 (82.5%)
 Black 49,397 (20.3%) 11,500 (22.4%) 24,232 (23.0%) 5,662 (18.9%) 1,454 (19.7%) 6,549 (13.2%)
 Other 9,375 (3.8%) 2,138 (4.2%) 4,048 (3.8%) 1,261 (4.2%) 269 (3.6%) 1,659 (3.3%)
 Not reported/documented 1,583 (0.6%) 276 (0.5%) 552 (0.5%) 210 (0.7%) 36 (0.5%) 509 (1.0%)
Female sex 129,804 (53.2%) 24,955 (48.5%) 57,483 (54.6%) 15,391 (51.4%) 3,986 (54.0%) 27,989 (56.3%)
Primary Payer
 Traditional Medicare 94,228 (38.7%) 20,804 (40.5%) 43,551 (41.4%) 10,487 (35.0%) 2,898 (39.2%) 16,488 (33.2%)
 Medicare HMO 79,079 (32.4%) 18,526 (36.0%) 36,454 (34.6%) 8,457 (28.2%) 2,229 (30.2%) 13,413 (27.0%)
 Medicaid 21,926 (9.0%) 3,830 (7.5%) 9,940 (9.4%) 3,054 (10.2%) 702 (9.5%) 4,400 (8.8%)
 Commercial 43,149 (17.7%) 7,217 (14.0%) 13,425 (12.7%) 7,117 (23.8%) 1,433 (19.4%) 13,957 (28.1%)
 Self-Pay/ Other 5,397 (2.3%) 1,031 (2.0%) 1,938 (1.9%) 845 (2.8%) 122 (1.7%) 1461 (3.0%)
CharlsonComorbidity Index
 0–1 69,800 (28.6%) 11,010 (21.4%) 20,997 (19.9%) 11,302 (37.7%) 585 (7.9%) 25,906 (52.1%)
 2–3 58,371 (23.9%) 12,211 (23.8%) 25,079 (23.8%) 7,716 (25.8%) 1,623 (22.0%) 11,742 (23.6%)
 4–5 47,737 (19.6%) 12,185 (23.7%) 23,177 (22.0%) 4,937 (16.5%) 1,242 (16.8%) 6,196 (12.5%)
 ≥6 67,871 (27.8%) 16,002 (31.1%) 36,055 (34.2%) 6,005 (20.0%) 3,934 (53.3%) 5,875 (11.8%)
Elective admission 66,666 (27.3%) 11,039 (21.5%) 11,821 (11.2%) 9,742 (32.5%) 718 (9.7%) 33,346 (67.1%)
Surgery during admission 108,170 (44.4%) 22,203 (43.2%) 26,866 (25.5%) 14,167 (47.3%) 4 (0.1%) 44,930 (90.4%)
Admission was 30-day readmission 40,527 (16.6%) 9,341 (18.2%) 21,704 (20.6%) 3,611 (12.1%) 2,144 (29.0%) 3,727 (7.5%)
Hospital LOS (days)
 1 29,222 (12.0%) 3,586 (7.0%) 5,759 (5.5%) 3,155 (10.5%) 310 (4.2%) 16,412 (33.0%)
 2–3 30,990 (12.7%) 4,829 (9.4%) 10,037 (9.5%) 4,913 (16.4%) 670 (9.1%) 10,541 (21.2%)
 4–6 80,218 (32.9%) 14,410 (28.0%) 37,801 (35.9%) 11,950 (39.9%) 2,331 (31.6%) 13,726 (27.6%)
 ≥7 103,349 (42.4%) 28,583 (55.6%) 51,711 (49.1%) 9,942 (33.2%) 4,073 (55.2%) 9,040 (18.2%)
ICU LOS (days)
 0 173,805 (71.3%) 27,085 (52.7%) 72,830 (69.2%) 22,404 (74.8%) 6,101 (82.6%) 45,385 (91.3%)
 1–2 27,461 (11.3%) 8,119 (15.8%) 13,445 (12.8%) 3,566 (11.9%) 593 (8.0%) 1,738 (3.5%)
 3–6 32,037 (13.1%) 11,961 (23.3%) 14,359 (13.6%) 3,132 (10.5%) 544 (7.4%) 2,041 (4.1%)
 ≥7 10,476 (4.3%) 4,243 (8.3%) 4,674 (4.4%) 858 (2.9%) 146 (2.0%) 555 (1.1%)
Home setup
 First floor setup 133,124 (54.6%) 28,922 (56.3%) 57,210 (54.3%) 16,083 (53.7%) 4,077 (55.2%) 26,832 (54.0%)
 Split level 10,175 (4.2%) 2,085 (4.1%) 4,155 (3.9%) 1,271 (4.2%) 406 (5.5%) 2,258 (4.5%)
 Multi-level 45,673 (18.7%) 9,005 (17.5%) 17,311 (16.4%) 6,827 (22.8%) 1,454 (19.7%) 11,076 (22.3%)
 Not documented 54,807 (22.5%) 11,396 (22.2%) 26,632 (25.3%) 5,779 (19.3%) 1,447 (19.6%) 9,553 (19.2%)
Stairs to enter home
 No 71,486 (29.3%) 15,626 (30.4%) 34,463 (32.7%) 7,715 (25.8%) 2,040 (27.6%) 11,642 (23.4%)
 Yes 151,321 (62.1%) 31,654 (61.6%) 59,836 (56.8%) 19,784 (66.0%) 4,745 (64.3%) 35,302 (71.0%)
 Not documented 20,972 (8.6%) 4,128 (8.0%) 11,009 (10.5%) 2,461 (8.2%) 599 (8.1%) 2,775 (5.6%)
Pre-hospital level of function
 Independent 125,160 (51.3%) 26,544 (51.6%) 42,604 (40.5%) 17,263 (57.6%) 3,137 (42.5%) 35,612 (71.6%)
 Assist with IADLs 48,065 (19.7%) 10,991 (21.4%) 24,542 (23.3%) 4,988 (16.6%) 1,741 (23.6%) 5,803 (11.7%)
 Assist with ADLs 61,790 (25.3%) 12,062 (23.5%) 33,952 (32.2%) 6,617 (22.1%) 2,164 (29.3%) 6,995 (14.1%)
 Not documented 8,764 (3.6%) 1,811 (3.5%) 4,210 (4.0%) 1,092 (3.6%) 342 (4.6%) 1,309 (2.6%)
Assistance available
 24 hours 112,120 (46.0%) 22,853 (44.5%) 46,768 (44.4%) 14,324 (47.8%) 3,645 (49.4%) 24,530 (49.3%)
 Occasionally 121,801 (50.0%) 26,665 (51.9%) 54,040 (51.3%) 14,544 (48.5%) 3,507 (47.5%) 23,045 (46.4%)
 Never 8,095 (3.3%) 1,582 (3.1%) 3,597 (3.4%) 886 (3.0%) 189 (2.6%) 1,841 (3.7%)
 Not documented 1,763 (0.7%) 308 (0.6%) 903 (0.9%) 206 (0.7%) 43 (0.6%) 303 (0.6%)
Functional status at PT evaluation
 Very Low 28,014 (11.5%) 4,412 (8.6%) 13,730 (13.0%) 3,848 (12.8%) 639 (8.7%) 5,385 (10.8%)
 Low 46,295 (19.0%) 9,076 (17.7%) 20,238 (19.2%) 5,494 (18.3%) 1,230 (16.7%) 10,257 (20.6%)
 Moderate 67,017 (27.5%) 13,520 (26.3%) 26,328 (25.0%) 7,771 (25.9%) 1,787 (24.2%) 17,611 (35.4%)
 High 47,494 (19.5%) 10,765 (20.9%) 20,615 (19.6%) 5,222 (17.4%) 1,582 (21.4%) 9,310 (18.7%)
 Very High 54,959 (22.5%) 13,635 (26.5%) 24,397 (23.2%) 7,625 (25.5%) 2,146 (29.1%) 7,156 (14.4%)
Duration (hours) from admission to PT evaluation
 <24 hours 64,299 (26.4%) 9,204 (17.9%) 22,470 (21.3%) 7,315 (24.4%) 1,553 (21.0%) 23,757 (47.8%)
 24–48 hours 71,574 (29.4%) 12,244 (23.8%) 28,226 (26.8%) 12,279 (41.0%) 1,901 (25.7%) 16,924 (34.0%)
 48–96 hours 61,497 (25.2%) 14,404 (28.0%) 31,901 (30.3%) 7,199 (24.0%) 2,127 (28.8%) 5,866 (11.8%)
 >96 hours 46,409 (19.0%) 15,556 (30.3%) 22,711 (21.6%) 3,167 (10.6%) 1,803 (24.4%) 3,172 (6.4%)
Number of OT visits
 0 58,875 (24.2%) 17,566 (34.2%) 28,662 (27.2%) 4,817 (16.1%) 2,056 (27.8%) 5,814 (11.7%)
 1 126,405 (51.9%) 22,840 (44.4%) 54,548 (51.8%) 15,236 (50.9%) 3,609 (48.9%) 30,172 (60.7%)
 2–3 48,063 (19.7%) 8,347 (16.2%) 18,319 (17.4%) 7,714 (25.8%) 1,397 (18.9%) 12,286 (24.7%)
 ≥4 10,435 (4.3%) 2,654 (5.2%) 3,819 (3.6%) 2,193 (7.3%) 322 (4.4%) 1,447 (2.9%)

HMO, health maintenance organization; LOS, length of stay; IADLs, instrumental activities of daily living; ADLs, activities of daily living; OT, occupational therapist