MT6s concentrations among night shift nurses by hospital department (medical specialty): a cross-sectional study of Polish nurses and midwives
| Category of the departments (No. of women) | Morning MT6s (ng/mg Cr), mean (95% CI) | Adjusted* morning MT6s (ng/mg Cr), mean (95% CI) |
| Surgical and intervention department (93) | 42.4 (36.2 to 48.5) | 45.0 (39.4 to 50.5) |
| Intensive care units (63) | 42.1 (34.7 to 49.5) | 43.4 (36.8 to 50.0) |
| General care dep. (155) | 49.1 (44.0 to 54.2) | 49.5 (45.1 to 54.4) |
| Other, including diagnostics (43) | 39.9 (31.2 to 48.7) | 40.7 (32.9 to 48.5) |
| Hospital department | ||
| Gynaecology and obstetrics (27) | 36.1 (25.7 to 46.4) | 41.8 (32.1 to 51.6) |
| Intern (37) | 49.4 (39.0 to 59.8) | 47.5 (38.7 to 56.4) |
| Neonatology (13) | 34.8 (20.1 to 49.4) | 35.1 (22.4 to 47.8) |
| Surgery (22) | 46.1 (33.1 to 59.1) | 46.4 (35.1 to 57.7) |
| Otolaryngology (12) | 53.2 (34.3 to 77.1) | 59.7 (36.9 to 70.5) |
| Operating suite (20) | 44.1 (30.8 to 57.4) | 45.1 (33.4 to 56.8) |
| Orthopaedics (11) | 67.2 (45.0 to 89.3) | 68.2 (48.7 to 87.7) |
| Intensive care (60) | 41.1 (33.7 to 48.6) | 42.5 (35.9 to 49.0) |
| Infectious diseases ward (17) | 59.1 (42.4 to 75.8) | 58.4 (44.0 to 72.8) |
| Admission room (26) | 50.2 (37.7 to 62.6) | 53.4 (42.1 to 64.7) |
| Birth delivery room (16) | 42.7 (28.0 to 57.3) | 44.8 (31.7 to 57.9) |
| Other then hospital (41) | 41.4 (32.4 to 50.4) | 42.0 (34.1 to 49.9) |
↵* Adjusted for evening MT6s concentration, number of full-term births and age at menarche.