TABLE 4.

Predictors of waiting time for radiotherapy in the group receiving chemotherapy

	Hierarchical modelling
Patient-level predictors:	% change in median waiting time (95% CI)	95% CI for mean change in median waiting times across RT centres
1993 vs. 1992	5% (–10 to 23%)	–21 to 39%
1994 vs. 1992	–5% (–27 to 24%)	–55 to 100%
1995 vs. 1992	–3% (–29 to 31%)	–60 to 135%
1996 vs. 1992	25% (–14 to 82%)	–60 to 287%
1997 vs. 1992	19% (–17 to 72%)	–60 to 259%
1998 vs. 1992	35% (–3 to 88%)	–50 to 269%
Regional cancer spread	28% (15 to 43%)	–4 to 72%
For mastectomy vs. breast-conserving surgery	31% (16 to 48%)	3 to 67%
If surgery done in a centre where there is a radiotherapy service	–18% (–35 to 4%)	–61 to 74%

CI: confidence interval