Hazard ratios with 95% confidence intervals (CI) for mental ill health among patients with any atopic or allergic disorder compared with matched unexposed individuals
| Number of outcomes | Person years | Incidence rate (per 10 000 person years) | Unadjusted HR | Adjusted HR* | ||
| Composite | Exposed | 229 124 | 15 900 000 | 144.13 | 1.23 (95% CI 1.23 to 1.24, p<0.001) | 1.16 (95% CI 1.15 to 1.17, p<0.001) |
| Unexposed | 203 450 | 17 300 000 | 117.82 | |||
| SMI | Exposed | 5581 | 17 200 000 | 32.46 | 1.00 (95% CI 0.97 to 1.04, p 0.895) | 0.99 (95% CI 0.95 to 1.03, p 0.646) |
| Unexposed | 5979 | 18 400 000 | 32.51 | |||
| Anxiety | Exposed | 93 848 | 16 700 000 | 56.210 | 1.30 (95% CI 1.29 to 1.31, p<0.001) | 1.22 (95% CI 1.21 to 1.23, p<0.001) |
| Unexposed | 77 479 | 18 000 000 | 43.05 | |||
| Depression | Exposed | 138 658 | 16 400 000 | 84.59 | 1.25 (95% CI 1.24 to 1.26, p<0.001) | 1.15 (95% CI 1.14 to 1.16, p<0.001) |
| Unexposed | 121 244 | 17 700 000 | 68.48 | |||
| Eating disorders | Exposed | 4188 | 17 200 000 | 2.44 | 1.06 (95% CI 1.01 to 1.10, p 0.013) | 1.06 (95% CI 1.01 to 1.11, p 0.01) |
| Unexposed | 4310 | 18 400 000 | 2.34 | |||
| OCD | Exposed | 3565 | 17 200 000 | 2.07 | 1.20 (95% CI 1.15 to 1.26, p<0.001) | 1.20 (95% CI 1.14 to 1.26, p<0.001) |
| Unexposed | 3163 | 18 400 000 | 1.72 | |||
| Self harm | Exposed | 21 959 | 17 100 000 | 12.83 | 0.99 (95% CI 0.98 to 1.01, p 0.518) | 1.02 (95% CI 1.00 to 1.04, p 0.032) |
| Unexposed | 23 619 | 18 300 000 | 12.90 |
*Adjusted HR: adjusted for age, sex, alcohol use, smoking status, body mass index (BMI), Townsend deprivation quintile score, asthma, and eczema at baseline.
OCD, obsessive-compulsive disorder; SMI, severe mental illness.