Table 4.

Matched tabulation of outcomes with two interventions, modified from Innes et al⁶³

	Control restoration*
Hall technique (all teeth with follow-up data)	Major failure	No major failure	Total	Odds ratio (95% CI)
Major failure	4	1	5	0.06 (0.001 to 0.375)† Favours half technique
No major failure	17	106	123
Total	21	107	128

^*(All teeth with follow-up data)

^†The cell counts have been adjusted by adding 1 to each cell to allow calculation of the odds ratio and the 95% confidence interval