Risk factors for sensitisation to mouse proteins in those with ≤3 years work with mice
| Mouse sensitised¶ | Not sensitised | p-value | |
| Subjects | 15 (6.9) | 201 (93.1) | |
| Male | 5 (33.3) | 81 (40.3) | 0.595 |
| Age years | 25.3 (21.8–42.9) | 25.8 (17.8–61.3) | 0.841 |
| Current smoker | 7 (46.7) | 24 (11.9) | <0.001 |
| Atopic# | 12 (80.0) | 82 (40.8) | 0.005 |
| Job title | 0.472 | ||
| Technician | 4 (26.7) | 59 (29.4) | |
| Scientist | 10 (66.7) | 138 (68.7) | |
| Other | 1 (6.7) | 4 (2.0) | |
| Cage type | 0.052 | ||
| IVC only ever | 2 (13.3) | 81 (40.3) | |
| Open/mixed ever | 13 (86.7) | 120 (59.7) | |
| Pet mice or rats ever | 3 (20.0) | 23 (11.4) | 0.400 |
| Rat sensitised+ | 6 (40.0) | 1 (0.5) | <0.001 |
| Mask fit test | 6 (40.0) | 87 (43.3) | 0.800 |
| Wearing of mask for tasks likely to be associated with high allergen exposure | 5 (33.3) | 72 (36.4) | 0.814 |
Data are presented as n (%) or median (range), unless otherwise stated. #: saline-adjusted wheal of ≥2 mm to grass, Dermatophagoides pteronyssinus or cat on skin prick testing; ¶: saline-adjusted wheal of ≥2 mm to mouse or positive specific IgE to mouse epithelium or mouse urine; +: saline-adjusted wheal of ≥2 mm to rat epithelium on skin prick testing. p<0.05 considered significant.