Table 2.
Results of multivariable linear regression analyses to model serum 25(OH)D levels by specialty, adjusting for sex, age, season, year of measurement and vitamin D supplementation intake
| Adjusted difference in mean 25(OH)D | 95% CI | P value | |
| Medical specialty | |||
| NEUR | Reference | – | – |
| AMU | –12.4 | –15.3 to –9.4 | <0.0001 |
| BOE | –9.1 | –12.2 to –5.9 | <0.0001 |
| EMER | –11.9 | –14.9 to –9.0 | <0.0001 |
| ENDO | –4.8 | –7.9 to –1.8 | 0.0017 |
| GAST | –9.7 | –12.6 to –6.8 | <0.0001 |
| NEPH | –14.4 | –17.4 to –11.4 | <0.0001 |
| ORTH | –14.3 | –17.4 to –11.1 | <0.0001 |
| OTHER | –10.8 | –13.3 to –8.3 | <0.0001 |
| PRIV | –1.9 | –4.5 to –0.7 | 0.1565 |
Specialties with <1000 patients (except for NEUR) were placed into OTHER for analysis.
AMU, acute medical unit; BOE, breast/oncology/endocrine surgery; EMER, emergency; ENDO, endocrinology; GAST, gastroenterology; NEPH, nephrology; NEUR, neurology; ORTH, orthopaedic; PRIV, private.