Table 3.
Comparison of Allied Health referrals using negative binomial regression. Patients matched for age, sex, and treatment status.
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Univariate | Multivariable | |||||||||||
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RRa | Lower 95% CI | Upper 95% CI | P value | RRa | Lower 95% CI | Upper 95% CI | P value | |||||
| Group | ||||||||||||||
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Intervention | 0.44 | 0.27 | 0.72 | <.001 | 0.74 | 0.48 | 1.16 | .20 | |||||
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Control | Reference | — | — | — | Reference | — | — | — | |||||
| Stage | <.001 |
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<.001 | |||||||||
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0/I | Reference | — | — | — | Reference | — | — | — | |||||
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II | 2.73 | 1.62 | 4.61 | <.001 | 2.16 | 1.30 | 3.60 | .003 | |||||
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III | 7.29 | 4.14 | 12.86 | <.001 | 6.10 | 3.52 | 10.56 | <.001 | |||||
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IV | 10.61 | 5.96 | 18.89 | <.001 | 9.62 | 5.51 | 16.79 | <.001 | |||||
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Missing | 17.00 | 8.86 | 32.62 | <.001 | 9.69 | 5.20 | 18.03 | <.001 | |||||
| Socioeconomic status (IRSD)b | <.001 |
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.14 | |||||||||
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1 | 3.61 | 1.79 | 7.29 | <.001 | 2.22 | 1.15 | 4.31 | .02 | |||||
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2 | 2.26 | 1.11 | 4.58 | .02 | 2.34 | 1.18 | 4.62 | .01 | |||||
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3 | 1.12 | 0.51 | 2.42 | .78 | 1.59 | 0.75 | 3.41 | .23 | |||||
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4 | Reference | — | — | — | Reference | — | — | — | |||||
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5 | 1.85 | 0.88 | 3.87 | .10 | 2.12 | 1.05 | 4.27 | .04 | |||||
| Recruitment site |
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<.001 |
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<.001 | ||||||
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1 | 1.92 | 0.89 | 4.16 | .10 | 2.58 | 1.23 | 5.41 | .01 | |||||
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2 | 0.14 | 0.05 | 0.36 | <.001 | 0.21 | 0.08 | 0.54 | .001 | |||||
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3 | 3.52 | 1.63 | 7.57 | .001 | 3.38 | 1.60 | 7.16 | .001 | |||||
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4 | Reference |
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Reference |
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| Waiting time | 0.9992 | 0.9990 | 0.9994 | <.001 | 0.9993 | 0.9991 | 0.9995 | <.001 | ||||||
aRR: Relative risk.
bIRSD: Index of relative socioeconomic disadvantage. 1=most disadvantaged; 5=least disadvantaged.