Table 1.

Distribution of Normalized Score Statistic (Based on 100,000 Monte Carlo Samples) for Hypothetical GB Childhood Leukemia Studies (Assuming that a 10-year Follow-up Results in 2593 Registrations Among Boys and 1983 Amongst Girls, and Assuming the BEIR V (18) Risk Coefficient (ERR = 32.15 Sv⁻¹))

Nominal score statistic	Percentile of standard normal distribution	Percent of simulations with score > nominal value
		Cohort study (individual)		Geographical correlation study (county district)		Case-control study (1 control per case)		Case-control study (5 controls per case)
		10-year follow-up	20-year follow-up	10-year follow-up	20-year follow-up	10-year follow-up	20-year follow-up	10-year follow-up	20-year follow-up
1.28	90.00	79.51	95.50	71.17	90.74	58.67	79.92	74.23	92.65
1.64	95.00	67.91	90.88	57.92	83.18	44.29	68.44	61.13	86.01
1.96	97.50	55.99	84.62	45.37	74.13	32.40	56.60	48.62	77.78
2.33	99.00	41.62	74.45	31.49	61.14	20.54	42.14	34.25	65.40
2.58	99.50	32.07	65.90	23.15	51.43	14.14	32.71	25.65	55.97
2.81	99.75	24.24	57.17	16.73	42.36	9.66	24.92	18.82	46.64
3.09	99.90	16.35	46.10	10.67	31.64	5.71	16.79	12.24	35.75
3.29	99.95	11.87	38.16	7.49	24.88	3.74	12.25	8.72	28.49
3.48	99.98	8.56	31.12	5.24	19.25	2.45	8.73	6.03	22.49
3.72	99.99	5.45	23.24	3.17	13.48	1.34	5.57	3.73	16.07