Table 3. Analysis of the Relationship of β-tubulin Genotype with Patient and Parasitological Independent Variables Before Treatment.

N = 183 female worms	OR	95% CI	p
Age of patient	0.97	0.93–1.00	0.081
No. females/nod.	0.94	0.73–1.21	0.629
CMFL 41–60 mf/ss	0.81	0.13–5.15	0.819
CMFL 61–70 mf/ss	1.93	0.44–8.49	0.385
CMFL 71–114 mf/ss	0.44	0.06–3.15	0.413
No. nod. 1994	1.00	0.81–1.22	0.976

Odds ratios (OR) and 95% confidence intervals (95% CI) for logistic regression of heterozygote status (vs. homozygote) of worms collected before ivermectin treatment on four independent variables. No. females/nod. = total number of females in the nodule; No. nod. 1994 = total number of palpable nodules in 1994; CMFL = Community Microfilarial Load (reference category: 10–40 microfilariae per skin snip (mf/ss)).