Open Access
Table 2
Propensity Score Matching for Scheuermann’s Disease and Vitamin D Deficiencya.
| Demographic | Vitamin D deficiency (original) n = 1024 | No Vitamin D deficiency (original) n = 10,253 | SMD before matching | Vitamin D deficiency (matched) n = 1012 | No Vitamin D deficiency (matched) n = 1012 | SMD after matching | P value after matching |
|---|---|---|---|---|---|---|---|
| Age (SD) | 16.6 ± 5.5 | 14 ± 4.84 | 0.5129 | 15.5 ± 5.47 | 15.3 ± 5.22 | 0.0558 | 0.2098 |
| Male (%) | 556 (54.297) | 6,650 (64.91) | 0.2176 | 556 (54.941) | 545 (53.854) | 0.0218 | 0.6235 |
| Female (%) | 468 (45.703) | 3,594 (35.081) | 0.2178 | 456 (45.059) | 467 (46.146) | 0.0218 | 0.6235 |
| White (%) | 281 (27.441) | 2,367 (23.104) | 0.0999 | 278 (27.47) | 281 (27.767) | 0.0066 | 0.8814 |
| Black or African American (%) | 12 (1.172) | 98 (0.957) | 0.021 | 12 (1.186) | 14 (1.383) | 0.0176 | 0.693 |
| Asian (%) | 10 (0.977) | 10 (0.098) | 0.1205 | 10 (0.988) | 0 (0) | 0.1413 | 0.0015 |
| American Indian or Alaska Native (%) | 0 (0) | 0 (0) | – | 0 (0) | 0 (0) | – | – |
| Native Hawaiian or other Pacific Islander (%) | 0 (0) | 0 (0) | – | 0 (0) | 0 (0) | – | – |
| Unknown race (%) | 729 (71.191) | 7,772 (75.861) | 0.106 | 720 (71.146) | 717 (70.85) | 0.0065 | 0.8832 |
| Hispanic or Latino (%) | 38 (3.711) | 217 (2.118) | 0.0948 | 38 (3.755) | 39 (3.854) | 0.0052 | 0.9075 |
| Not Hispanic or Latino (%) | 304 (29.688) | 2460 (24.012) | 0.1283 | 300 (29.644) | 297 (29.348) | 0.0065 | 0.8837 |
| Unknown ethnicity (%) | 682 (66.602) | 7568 (73.87) | 0.1595 | 674 (66.601) | 676 (66.798) | 0.0042 | 0.9248 |
| Anxiety disorder | 325 (31.738) | 1117 (10.903) | 0.526 | 314 (31.028) | 319 (31.522) | 0.0107 | 0.8105 |
| Obesity | 329 (32.129) | 1107 (10.805) | 0.5378 | 319 (31.522) | 343 (33.893) | 0.0506 | 0.2555 |
| Fibromyalgia | 91 (8.887) | 229 (2.235) | 0.2934 | 84 (8.3) | 79 (7.806) | 0.0182 | 0.683 |
| Myositis | 90 (8.789) | 221 (2.157) | 0.2947 | 84 (8.3) | 74 (7.312) | 0.0368 | 0.4074 |
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