Table 4.

Relative risk of persistence of injury in relation to the variables under study.

	Case	Total	RR (IC 95%)
Smoke habits > 10 cig	216	384	2.04 (1.51-2.74)
Daily alcohol use	46	106	0.81 (0.53-1.21)
Partner > 4	255	519	1.17 (0.85-1.62)
Ectopia > 2/3	117	180	2.52 (1.78-3.58)
Metaplasia > 20%	145	297	1.06 (0.78-1.42)
Lugol test positive	305	466	9.52 (6.51-13.90)
pH > 4.5	126	207	2.07 (1.49-2.88)
Wift test positive	122	200	2.07 (1.48-2.89)
Presence of leucorrhoea	222	348	3.51 (2.58-4.76)
Treatment	142	358	0.51 (0.38-0.69)