Factors associated with a greater likelihood of specialistic/spirometric monitoring (logistic regression analysis)
| Variable | Adjusted OR (95% CI) |
| LHU | |
| Maximum versus reference | 4.52 (2.60 to 7.86) |
| Age at the index prescription (years) | |
| 5–8 | 2.91 (2.51 to 3.39) |
| ≤4 | 1 |
| Number of drug prescriptions in the 24 months after the IP | |
| >8 | 2.62 (2.14 to 3.19) |
| 4–8 | 1.63 (1.36 to 1.96) |
| <4 | 1 |
| Oral steroid prescriptions in the 24 months after the IP | |
| Yes | 1.18 (1.02 to 1.37) |
| No | 1 |
IP, index prescription; LHU, local health unit.