Table 4.

Determinants of costs of hospital care: generalised linear model

	Costs of hospital stay			Costs of diagnostic procedures			Costs of therapeutic interventionsa			Costs of chemotherapy			Total hospital care costs
	Exp (B)	95% CI	p‐Value	Exp (B)	95% CI	p‐Value	Exp (B)	95% CI	p‐Value	Exp (B)	95% CI	p‐Value	Exp (B)	95% CI	p‐Value
PCT consultation			.34			.21			.89			.67			.48
Yes	1.09	0.92–1.29		1.18	0.91–1.52		0.98	0.72–1.33		0.85	0.41–1.78		1.06	0.90–1.26
No	1.00			1.00			1.00			1.00			1.00
Gender			.58			.26			<.01			<.01			.12
Female	1.04	0.90–1.21		0.88	0.70–1.10		1.65	1.25–2.18		1.51	1.20–1.90		1.12	0.97–1.31
Male	1.00			1.00			1.00			1.00			1.00
Estimated prognosis according to the physician			.18			.08			<0.01			.69			.02
<1 month	0.79	0.62–1.02		0.63	0.43–0.91		0.35	0.22–0.56		0.74	0.43–1.26		0.68	0.53–0.87
3–1 months	1.03	0.84–1.26		0.91	0.67–1.23		0.49	0.33–0.72		0.83	0.49–1.40		0.92	0.75–1.12
6–3 months	1.00	0.84–1.19		0.97	0.75–1.25		0.60	0.43–0.84		0.93	0.69–1.23		0.95	0.80–1.13
6–12 months	1.00			1.00			1.00			1.00			1
WHO Performance Status			.08			.37			.06			.34			.24
4‐Bedbound	1.47	1.04–2.07		0.72	0.42–1.21		1.50	0.82–2.76		2.01	0.85–4.71		1.38	0.98–1.94
3‐Symptomatic. >50% in bed. but not bedbound	1.41	1.09–1.81		0.77	0.54–1.11		1.34	0.82–2.18		1.22	0.75–1.96		1.25	0.97–1.61
2‐Symptomatic. <50% in bed during the day	1.34	1.05–1.69		0.82	0.57–1.16		0.83	0.52–1.32		1.45	0.95–2.21		1.13	0.89–1.44
1‐Symptomatic but completely ambulatory	1.20	0.96–1.51		0.71	0.51–0.99		0.86	0.56–1.33		1.34	0.93–1.93		1.04	0.83–1.30
0‐Asymptomatic	1.00			1.00			1.00			1.00			1
Hospital admission was			.54			.77			<.00			<.01			.02
Unplanned	1.06	0.88–1.27		1.04	0.80–1.36		0.32	0.23–0.46		0.64	0.47–0.88		0.81	0.67–0.97
Planned	1.00			1.00			1.00			1.00			1.00
Treatment status at time the time of admission:			.04			.02			.03			.93			.02
Other	1.18	0.96–1.44		1.52	1.12–2.06		1.03	0.71–1.51		1.10	0.40–2.99		1.18	0.97–1.45
No further options for anti‐tumour therapy	0.89	0.74–1.06		1.28	0.97–1.67		0.67	0.48–0.93		1.17	0.52–2.60		0.86	0.72–1.03
Patient received anti‐tumour therapy	1.00			1.00			1.00			1.00			1.00
Diagnosis			.15			.54			.92			.11			.66
Other cancer	1.28	1.06–1.55		1.10	0.83–1.48		0.93	0.65–1.31		0.61	0.40–0.93		1.14	0.95–1.38
Lung cancer	1.07	0.81–1.41		1.06	0.70–1.60		0.93	0.56–1.56		1.05	0.69–1.61		0.97	0.74–1.28
Breast cancer	1.10	0.87–1.41		1.36	0.94–1.96		0.81	0.51–1.27		0.68	0.32–1.42		0.98	0.77–1.25
Urogenital cancer	1.08	0.88–1.32		1.02	0.74–1.41		0.96	0.66–1.40		0.97	0.70–1.34		1.02	0.83–1.25
Gastrointestinal cancer	1.00			1.00			1.00			1.00
Co‐morbidity			.69			.14			.83			.10			.66
>1 co‐morbidity	1.04	0.87–1.25		1.07	0.82–1.40		0.96	0.68–1.34		1.37	0.99–1.88		1.05	0.88–1.26
1 co‐morbidity	1.07	0.91–1.26		1.27	1.00–1.61		0.91	0.68–1.23		0.97	0.76–1.24		1.07	0.92–1.26
No co‐morbidity	1.00			1.00			1.00			1.00			1.00
Type of hospital			.22			.22			.99			.02			.57
Academic hospital	1.12	0.94–1.34		0.85	0.65–1.10		1.00	0.70–1.41		1.41	1.05–1.89		1.05	0.88–1.26
General hospital	1.00			1.00			1.00			1.00			1.00
Age	0.99	0.99–1.00	.09	1.00	0.99–1.01	.88	1.01	0.99‐1.02	.35	0.99	0.98–1.00	.17	0.99	0.99–1.00	.13
Number of hospital admissions due to current disease	1.01	0.99 ‐1.03	.39	1.00	0.97–1.03	.91	1.02	0.98–1.06	.30	1.01	0.96–1.05	.75	1.01	0.99–1.03	.37
Time since primary diagnosis	1.00	0.99–1.01	.91	0.99	0.97–1.01	.30	1.02	1.00–1.05	.09	1.00	0.97–1.03	.91	1.00	0.99–1.01	.88

^aCosts of therapeutic interventions include costs of PCT consultation, costs of therapeutic procedures and medication costs. The average medication costs per day were estimated based on a random sample of 43 patients in both groups to be €15 per day for regular medication and €143 per day for expensive medication. We did not find a difference in costs between patients with and without PCT consultation.