Analysis of the Relationship of Parasite Fertility with β-<i>tubulin</i> Genotype, Patient and Parasitological Independent Variables Before Treatment.

Odds ratios (OR) and 95% confidence intervals (95% CI) for logistic regression of full fertility (vs. low- or non-fertility) of worms collected before ivermectin treatment on six independent variables. Reference category for genotype: heterozygosity for β-tubulin gene. No. females/nod. = total number of females in the nodule. No. nod. 1994 = total number of palpable nodules in 1994. No. males = number of males in the nodule. CMFL = Community Microfilarial Load (reference category: 10–40 microfilariae per skin snip (mf/ss)).