Table 1. Comparison of baseline innate and psychological characteristics between those who had LBP and those who had no LBP.
| Variable | Label | Responders | LBP | No LBP | P-Value* | Non-responders | P-Value# |
| n = 1230 | n = 518 | n = 712 | n = 3095 | ||||
| Innate Characteristics | |||||||
| Age (N = 4319) | 22.3±4.5 | 22.6±4.6 | 22.1±4.3 | 0.080 | 21.9±4.1 | 0.001 | |
| Gender | Male | 852 (69.6%) | 329 (63.9%) | 523 (73.7%) | 0.0002 | 2230 (72.3%) | 0.068 |
| Female | 373 (30.4%) | 186 (36.1%) | 187 (26.3%) | 853 (27.7%) | |||
| Race | Black or Africa | 109 (8.9%) | 58 (11.2%) | 51 (7.2%) | 0.059 | 311 (10.1%) | 0.020 |
| Hispanic | 100 (8.1%) | 37 (7.1%) | 63 (8.9%) | 326 (10.6%) | |||
| White or Caucas | 927 (75.5%) | 381 (73.6%) | 546 (76.9%) | 2263 (73.3%) | |||
| Other | 92 (7.5%) | 42 (8.1%) | 50 (7.0%) | 187 (6.1%) | |||
| EDUCATION | High school or lower | 448 (36.4%) | 193 (37.3%) | 255 (35.8%) | 0.204 | 1487 (48.1%) | <0.0001 |
| Some college | 622 (50.6%) | 249 (48.1%) | 373 (52.4%) | 1376 (44.5%) | |||
| College or higher | 160 (13.0%) | 76 (14.7%) | 84 (11.8%) | 231 (7.5%) | |||
| INCOME | Less than $20,000 | 609 (49.7%) | 249 (48.3%) | 360 (50.6%) | 0.430 | 1516 (49.1%) | 0.738 |
| Greater than $20,000 | 617 (50.3%) | 266 (51.7%) | 351 (49.4%) | 1571 (50.9%) | |||
| Active Duty | Active | 568 (46.2%) | 263 (50.8%) | 305 (42.8%) | 0.012 | 1964 (63.5%) | <0.0001 |
| Reserve | 660 (53.7%) | 255 (49.2%) | 405 (56.9%) | 1122 (36.3%) | |||
| Other | 2 (0.2%) | 2 (0.3%) | 6 (0.2%) | ||||
| Time In Army | <5 months | 684 (55.6%) | 287 (55.4%) | 397 (55.8%) | 0.968 | 2007 (64.9%) | <0.0001 |
| 5 months–1 year | 315 (25.6%) | 132 (25.5%) | 183 (25.7%) | 654 (21.2%) | |||
| More than 1 year | 231 (18.8%) | 99 (19.1%) | 132 (18.5%) | 430 (13.9%) | |||
| Company Instructor | Delta | 295 (24.0%) | 117 (22.6%) | 178 (25.0%) | 0.482 | 674 (21.8%) | 0.286 |
| Foxtrot | 130 (10.6%) | 49 (9.5%) | 81 (11.4%) | 393 (12.7%) | |||
| Echo | 194 (15.8%) | 85 (16.4%) | 109 (15.3%) | 471 (15.2%) | |||
| Alpha | 185 (15.0%) | 79 (15.3%) | 106 (14.9%) | 442 (14.3%) | |||
| Charlie | 169 (13.7%) | 68 (13.1%) | 101 (14.2%) | 441 (14.2%) | |||
| Bravo | 257 (20.9%) | 120 (23.2%) | 137 (19.2%) | 674 (21.8%) | |||
| Height | 68.3±3.9 | 68.0±3.9 | 68.4±3.9 | 0.080 | 68.3±3.9 | 0.585 | |
| Weight | 164.0±27.8 | 164.0±28.0 | 164.0±27.7 | 0.992 | 165.2±27.6 | 0.207 | |
| BMI | 24.7±3.1 | 24.8±3.1 | 24.6±3.2 | 0.184 | 24.8±3.1 | 0.194 | |
| Psychological Characteristics | |||||||
| BDI Total | 6.0±6.1 | 6.6±5.9 | 5.5±6.2 | 0.002 | 6.6±6.7 | 0.003 | |
| FPQ Total | 18.2±5.7 | 18.5±5.9 | 17.9±5.5 | 0.040 | 18.0±6.0 | 0.476 | |
| BBQ Total | 43.9±7.2 | 43.8±7.2 | 44.0±7.1 | 0.610 | 43.2±7.0 | 0.002 | |
| STAI | 35.3±9.0 | 35.9±9.4 | 34.9±8.6 | 0.055 | 36.3±9.2 | 0.001 | |
Responders = those responding to online survey, Non-responders = those not responding to survey, LBP = low back pain,
* = p-values for comparison of those with LBP and those without LBP (responders only),
#
= p-values for comparison of those responding to survey and those not responding to survey,
BMI = Body Mass Index, BDI = Beck Depression Inventory, FPQ = Fear of Pain Questionnaire (9 items), BBQ = Back Beliefs Questionnaire, STAI = State Trait Anxiety Inventory (state portion only). Bold font indicates p-value less than 0.05.