Table 2.

Power estimates (5% significance level)

SD (log10)	Log10 difference
	0.08	0.10	0.12	0.14	0.16	0.18	0.20
Trial C: 150 BCG immunisation vs 150 no BCG immunisation
0.3	59%	78%	91%	97%	99%	>99%	>99%
0.4	37%	53%	69%	82%	91%	96%	98%
0.5	26%	37%	50%	63%	75%	84%	91%
0.6	19%	28%	37%	48%	59%	69%	78%

Cells highlighted in grey correspond to >80% power.