Adjusted* ORs for scanner category in the ‘symptom-reporting’ class
| SMF target symptoms | SMF target—core symptoms | A priori unrelated symptoms | ||||
|---|---|---|---|---|---|---|
| Scanner category | OR | 95% CI | OR | 95% CI | OR | 95% CI |
| Unexposed (reference) | 1 | 1 | 1 | |||
| 1.5 T closed bore† | 1.88 | 1.07–3.31 | 2.41 | 0.72–8.13 | 0.75 | 0.17–3.34 |
| 3.0 T closed bore‡ | 2.14 | 1.13–4.03 | 4.92 | 1.21–19.97 | 0.28 | 0.05–1.62 |
| 7.0 T closed bore§ | 4.17 | 1.30–13.35 | 66.82 | 6.39–698.97 | n.a. | n.a. |
| <1.5 T various types¶ | 1.47 | 0.59–3.64 | 0.84 | 0.14–5.19 | 1.53 | 0.25–9.41 |
| >4.7 T small bore** | 0.72 | 0.27–1.94 | n.a. | n.a. | 17.70 | 0.04–7379.05 |
*Adjusted for gender, age (18–27, 28–40, 40–65 years), workload, use of solvents and alcohol consumption during previous 24 h.
†Includes all large-bore cylindrical systems of 1.5 Tesla.
‡Includes all large-bore cylindrical systems of 3.0 Tesla.
§Includes all large-bore cylindrical systems of 7.0 Tesla.
¶Includes extremity scanners, upright scanners and open (ie, transversal field) scanners up to 1.5 Tesla and large-bore cylindrical systems below 1.5 Tesla.
**Includes small-bore cylindrical animal scanners with field strengths between 4.7 and 11.7 Tesla.
SMF, static magnetic field; T, Tesla.