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. 2019 Sep 20;9(9):e028633. doi: 10.1136/bmjopen-2018-028633

Table 1.

Patient characteristics

Entry-point provider
Conservative therapist Physician
Total Chiropractor Physical therapist Acupuncture Primary care Orthopaedic surgeon Emergency medicine MD other Rehab Neurosurgeon
Full sample—N (%) 216 504 (100) 50 014 (23.1) 3499 (1.6) 1839 (0.8) 114 782 (53.0) 9335 (4.3) 8746 (4.0) 4422 (2.0) 3246 (1.5) 578 (0.3)
Age, year—mean (SD) 48.1 (15.9) 45.7 (14.9) 47.0 (15.7) 42.4 (10.6) 47.7 (15.4) 50.1 (16.4) 50.1 (18.3) 51.3 (15.3) 46.9 (15.0) 52.2 (14.8)
Sex/gender—N (%)
 Female 108 347 (50.1) 22 808 (45.6) 1995 (57.1) 972 (52.9) 58 182 (50.7) 4648 (49.8) 4560 (52.2) 2282 (51.6) 1554 (47.9) 245 (42.4)
 Male 107 660 (49.8) 27 193 (54.4) >1493 (>42.6)* >856 (>46.5)* 56 517 (49.2) 4674 (50.1) >4175 (>47.7)* 2140 (48.4) >1681 (>51.8)* 333 (57.6)
Race/ethnicity—N (%)
 Black 18 907 (8.7) 2190 (4.4) 191 (5.5) 45 (2.4) 11 755 (10.2) 802 (8.6) 1192 (13.6) 494 (11.2) 208 (6.4) 50 (8.7)
 Hispanic 20 936 (9.7) 3766 (7.5) 263 (7.5) 224 (12.2) 12 212 (10.6) 752 (8.1) 860 (9.8) 541 (12.2) 293 (9.0) 38 (6.6)
 Asian 9344 (4.3) 1636 (3.3) 224 (6.4) 747 (40.6) 4885 (4.3) 354 (3.8) 270 (3.1) 194 (4.4) 218 (6.7) 15 (2.6)
 White 159 503 (73.7) 40 709 (81.4) 2666 (76.2) 732 (39.8) 81 971 (71.4) 7046 (75.5) 6115 (69.9) 3013 (68.1) 2394 (73.8) 449 (77.7)
 Unknown (missing) 7814 (3.6) 1713 (3.4) 155 (4.4) 91 (4.9) 3959 (3.4) 381 (4.1) 309 (3.5) 180 (4.1) 133 (4.1) 26 (4.5)
Insurance—N (%)
 Commercial 183 117 (84.7) 44 520 (89.0) 3048 (87.1) 1827 (99.3) 99 842 (87.0) 7696 (82.5) 6236 (71.3) 3601 (81.4) 2891 (89.1) 472 (81.7)
 Medicare Advantage 32 937 (15.2) 5476 (11.0) >440 (>12.6)* 12 (0.7) 14 900 (13.0) >1628 (>17.4)* >2499 (>28.6)* >810 (>18.3)* >344 (>10.6)* >95 (>16.4)*

Age, sex/gender, race/ethnicity and insurance are all statistically significant at p<0.0001.

*Cell suppressed due to small N’s with unknown sex/gender or insurance in the corresponding column. Two additional initial type of providers—other non-MD (eg, physician assistants, advance practice nurses) and radiologist—were included in the analyses but not reported in this table. Outcomes with a sample size <11 are not shown due to small sample size. There were a small number of individuals with unknown sex/gender and insurance type, and if we provided exact n’s, readers may be able to infer the unknown n’s which would be problematic since we cannot disclose n<11 for purposes of confidentiality of the data. For example, in table 1 under male PT, >1493 means that there was an unknown sex/gender row or column with n<11. Therefore, the number of male PT first individuals is between 1493 and 1504.

PT, physical therapy.