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Table 1 Demographics

From: Timing of physical therapy for individuals with patellofemoral pain and the influence on healthcare use, costs and recurrence rates: an observational study

  Full cohort
(n = 74,408)
Any physical therapy use
(n = 15,430)
Physical therapy first
(n = 3,591)
Early physical therapy
(n = 7,924)
Delayed physical therapy
(n = 3915)
No physical therapy
(n = 58,579)
Age, mean (SD) 32.1 (7.7) 31.9 (7.4) 30.4 (7.3) 32.2 (7.3) 32.6 (7.5) 32.1 (7.8)
  18 to 30 35,095 (47.2) 7377 (47.8) 1992 (55.5) 3684 (46.5) 1701 (43.4) 27,512 (47.0)
  31 to 40 26,943 (36.2) 5785 (37.5) 1209 (33.7) 3015 (38.0) 1561 (39.9) 21,019 (35.9)
  41 to 50 12,370 (16.6) 2268 (14.7) 390 (10.9) 1225 (15.5) 653 (16.7) 10,048 (17.2)
Female sex 22,640 (30.4) 4540 (29.4) 702 (19.5) 2600 (32.8) 1238 (31.6) 18,019 (30.8)
Branch of service
 Army 35,885 (48.2) 6445 (41.8) 1795 (50.0) 2927 (36.9) 1723 (44.0) 29,273 (50.0)
 Air Force 19,731 (26.5) 5358 (34.7) 710 (19.8) 3312 (41.8) 1336 (34.1) 14,219 (24.3)
 Coast Guard 1689 (2.3) 316 (2.0) 58 (1.6) 182 (2.3) 76 (1.9) 1367 (2.3)
 Marine Corps 5940 (8.0) 1080 (7.0) 437 (12.2) 416 (5.2) 227 (5.8) 4822 (8.2)
 Navy 11,163 (15.0) 2231 (14.5) 591 (16.5) 1087 (13.7) 553 (14.1) 8898 (15.2)
Socioeconomic status
 Junior Enlisted 32,702 (43.9) 6793 (44.0) 1624 (45.2) 3481 (43.9) 1688 (43.1) 25,724 (43.9)
 Senior Enlisted 26,854 (36.1) 5422 (35.1) 1072 (29.9) 2888 (36.4) 1462 (37.3) 21,297 (36.4)
 Junior Officer 7847 (10.5) 1762 (11.4) 472 (13.1) 884 (11.2) 405 (10.3) 6035 (10.3)
 Senior Officer 6587 (8.9) 1272 (8.2) 259 (7.2) 659 (8.3) 354 (9.0) 5293 (9.0)
 Unknown 418 (0.6) 182 (1.2) 164 (4.6) 12 (0.2) 6 (0.2) 230 (0.4)
  1. Reported as number (percentage) of patients unless otherwise specified