Variables | Unadjusted | Model 1: crude multimorbidity rate as exposure | Model 2: standardised multimorbidity rate as exposure | |||
---|---|---|---|---|---|---|
Adjusted for covariates | Adjusted for covariates | |||||
OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | |
Age of GPs, years | ||||||
<45 (Ref) | ||||||
45–54 | 1.59 (1.04 to 2.42) | 0.031 | 1.64 (1.08 to 2.50) | 0.021 | 1.66 (1.08 to 2.54) | 0.020 |
≥55 | 0.94 (0.61 to 1.47) | 0.796 | 0.84 (0.53 to 1.34) | 0.460 | 0.87 (0.55 to 1.39) | 0.572 |
Sex of GPs | ||||||
Female (Ref) | ||||||
Male | 1.28 (0.94 to 1.74) | 0.120 | 1.29 (0.89 to 1.86) | 0.174 | 1.42 (1.02 to 1.98) | 0.038 |
GPs in the practice | ||||||
1 (Ref) | ||||||
2 | 1.31 (0.85 to 2.02) | 0.215 | 1.13 (0.71 to 1.79) | 0.601 | 1.21 (0.77 to 1.90) | 0.412 |
3 | 0.77 (0.48 to 1.24) | 0.284 | 0.63 (0.37 to 1.09) | 0.100 | 0.70 (0.43 to 1.15) | 0.156 |
≥4 | 0.88 (0.57 to 1.35) | 0.547 | 0.63 (0.38 to 1.05) | 0.078 | 0.76 (0.48 to 1.22) | 0.258 |
DADI, quartilesb | ||||||
Lowest (Ref) | ||||||
Second | 0.91 (0.57 to 1.46) | 0.705 | 0.86 (0.53 to 1.40) | 0.546 | 0.93 (0.57 to 1.51) | 0.763 |
Third | 1.36 (0.88 to 2.09) | 0.165 | 1.22 (0.76 to 1.94) | 0.408 | 1.37 (0.87 to 2.15) | 0.178 |
Highest | 1.03 (0.65 to 1.62) | 0.908 | 0.92 (0.57 to 1.48) | 0.727 | 1.01 (0.61 to 1.69) | 0.969 |
Rate of patients aged ≥65 years, per 100 patients, quartiles | ||||||
Lowest (Ref) | Omittedc | Omittedd | ||||
Second | 2.48 (1.51 to 4.07) | <0.001 | ||||
Third | 1.78 (1.06 to 3.00) | 0.030 | ||||
Highest | 2.24 (1.36 to 3.70) | 0.002 | ||||
Rate of female patients, per 100 patients, quartiles | ||||||
Lowest (Ref) | Omittedd | |||||
Second | 1.16 (0.76 to 1.76) | 0.500 | 1.46 (0.92 to 2.32) | 0.108 | ||
Third | 0.88 (0.56 to 1.38) | 0.581 | 1.14 (0.68 to 1.91) | 0.625 | ||
Highest | 0.65 (0.41 to 1.03) | 0.069 | 0.86 (0.51 to 1.45) | 0.578 | ||
Crude rate of patients with multimorbidity, per 100 patients, quartiles | ||||||
Lowest (Ref) | ||||||
Second | 1.23 (0.74 to 2.05) | 0.423 | 1.19 (0.72 to 1.98) | 0.496 | — | — |
Third | 1.71 (1.08 to 2.71) | 0.023 | 1.64 (1.02 to 2.64) | 0.043 | — | — |
Highest | 1.79 (1.13 to 2.82) | 0.013 | 1.60 (0.99 to 2.60) | 0.056 | — | — |
Sex- and age-standardised rate of patients with multimorbidity per 100 patients, quartiles | ||||||
Lowest (Ref) | ||||||
Second | 1.28 (0.80 to 2.04) | 0.307 | — | — | 1.27 (0.78 to 2.06) | 0.341 |
Third | 1.37 (0.86 to 2.18) | 0.179 | — | — | 1.37 (0.85 to 2.21) | 0.203 |
Highest | 1.16 (0.72 to 1.88) | 0.547 | — | — | 1.07 (0.63 to 1.80) | 0.808 |
↵a Due to missing values on covariates, the number of included GPs are reduced from 1676 to 1664 in the full model.
↵b Data missing for 12 GPs.
↵c Omitted owing to multicollinearity with multimorbidity.
↵d Omitted as rate of patients with multimorbidity is sex- and age-standardised. CI = confidence interval. DADI = Danish Deprivation Index. OR = odds ratio.