Table 3.

Estimated doses with 95% lower (L) and upper (U) confidence intervals (CI) based on based on calibration curves for each laboratory when different numbers of metaphases analysed.

Physical Dose (Gy)	Laboratory	Ncell	Ndicent	Estimated dose (Gy)	95% CI L	95% CI U	Error (%)
0.75	B	20	1	0.64	0.00	1.78	−15.1
		30	1	0.49	0.00	1.41	−35.3
		50	2	0.55	0.08	1.22	−26.7
		1000	45	0.59	0.48	0.72	−20.8
	C	20	1	0.81	0.05	2.12	8.1
		30	1	0.64	0.03	1.71	−15.3
		50	3	0.90	0.34	1.65	20.3
		1000	51	0.82	0.69	0.96	9.4
	D	20	1	0.64	0.00	1.89	−14.3
		30	3	1.02	0.33	1.95	35.7
		50	4	0.88	0.35	1.58	17.5
		1000	82	0.90	0.77	1.03	19.5
	E	20	0	0.00	0.00	1.70	−100.0
		30	0	0.00	0.00	1.28	−100.0
		50	1	0.30	0.01	1.19	−60.0
		1000	38	0.52	0.38	0.67	−31.3
1.5	B	20	4	1.47	0.67	2.48	−2.0
		30	7	1.60	0.95	2.40	6.7
		50	9	1.39	0.87	1.99	−7.3
		810	100	1.11	0.99	1.25	−26.0
	C	20	3	1.52	0.61	2.71	1.2
		30	5	1.61	0.85	2.54	7.2
		50	10	1.78	1.18	2.47	18.5
		573	103	1.68	1.50	1.86	11.8
	D	20	4	1.56	0.68	2.68	3.9
		30	7	1.71	0.98	2.58	13.8
		50	9	1.46	0.90	2.13	−2.4
		593	100	1.41	1.24	1.58	−6.2
	E	20	7	2.60	1.41	4.06	73.3
		30	7	1.99	1.05	3.17	32.7
		50	11	1.92	1.18	2.80	28.0
		624	101	1.55	1.34	1.78	3.3
3.0	B	20	13	2.82	2.00	3.75	−6.0
		30	17	2.62	1.95	3.37	−12.7
		50	31	2.75	2.23	3.31	−8.3
		159	100	2.77	2.48	3.08	−7.7
	C	20	9	2.75	1.81	3.85	−8.4
		30	13	2.69	1.92	3.56	−10.2
		50	21	2.65	2.05	3.32	−11.6
		239	112	2.81	2.53	3.10	−6.4
	D	20	19	3.76	2.85	4.78	25.4
		30	29	3.80	3.05	4.62	26.6
		50	43	3.56	2.98	4.19	18.8
		129	100	3.37	3.01	3.75	12.3
	E	20	11	3.45	2.22	4.88	15.0
		30	15	3.25	2.25	4.40	8.3
		50	29	3.56	2.78	4.43	18.7
		239	129	3.41	3.05	3.79	13.7
4.5	B	20	29	4.32	3.50	5.22	−4.0
		30	37	3.96	3.29	4.69	−12.0
		50	59	3.87	3.35	4.43	−14.0
		85	100	3.77	3.38	4.19	−16.2
		22	31	4.25	3.46	5.10	−5.6
	c	20	24	4.60	3.65	5.65	2.2
		30	31	4.25	3.48	5.10	−5.5
		50	62	4.68	4.07	5.32	3.9
		101	106	4.29	3.86	4.73	−4.7
		25	30	4.60	3.75	5.53	2.2
	D	20	28	4.64	3.72	5.64	3.1
		30	47	4.93	4.18	5.73	9.5
		50	70	4.64	4.06	5.25	3.0
		73	100	4.58	4.10	5.09	1.9
		21	30	4.69	3.79	5.67	4.2
	E	20	21	5.07	3.82	6.47	12.7
		30	29	4.83	3.81	5.96	7.3
		50	55	5.21	4.41	6.06	15.8
		101	107	5.09	4.54	5.69	13.1
		31	30	4.84	3.83	5.94	0.1
		20	29	4.32	3.50	5.22	−4.0