Table 3. Odds ratios for the use of chemotherapy in Dukes stage C and D colorectal cancer patients, in relation to the year of diagnosis and the Calman–Hine implementation scores.

	1995–2000			1996–1998
Covariate	Odds ratio	95% Confidence interval	P-value	Odds ratio	95% Confidence interval	P-value
Year of diagnosisa	1.18	1.14–1.22	<0.01	1.09	0.78–1.52	0.60
Team scoreb per 25% increase	0.92	0.83–1.03	0.15	1.16	0.86–1.58	0.33
Specialisation scoreb per 25% increase	1.32	1.02–1.69	0.03	1.03	0.55–1.94	0.92

^aOdds ratios adjusted for gender, age, stage of disease, Townsend deprivation score.

^bOdds ratios adjusted for gender, age, stage of disease, Townsend deprivation score and year of diagnosis.