Demographic and clinical features of the studied patients and results of questionnaire administration (number of records containing missing information is in parenthesis)
| Variables | All Patients | Focal blepharospasm | Blepharospasm as part of segmental or multifocal dystonia |
|---|---|---|---|
| Number | 159 | 104 | 55 |
| Men/women | 41/118 | 33/71 | 9/46 |
| Mean age (y) at bletharospasm onset (SD) | 58.5 (9.7) | 57.1 (9.1) | 61.2 (7.1) |
| Mean duration (y) of illness (SD) | 5.2 (1.8) | 5.2 (1.7) | 5.3 (1.9) |
| Ocular diseases | 48 | 31 | 17 |
| Hypertension | 34 | 20 | 14 |
| Diabetes | 9 | 6 | 3 |
| Head or face trauma with loss of consciousness | 11 (2) | 3 (1) | 8 (1) |
| Neck or trunk trauma | 9 (2) | 7 (1) | 2 (1) |
| Menopausal state preceding blepharospasm onset | 94 | 55 | 39 |
| Edentulousness | 11 | 5 | 7 |
| Cigarette smoking (current smokers) | 23 | 16 | 7 |
| Family history of dystonia | 12 | 8 | 4 |
| Family history of tremor | 15 | 13 | 2 |