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Association between Recruitment Methods and Attrition in Internet-Based Studies

Table 2

Follow-up participation proportion, unadjusted odds ratios and odds ratios adjusted for the variables detailed in the Methods section and confidence intervals are shown for different recruitment methods of individuals enrolled in the Influenzanet study (stratified by country), Ninfea and ELF.

Table 2

doi: https://doi.org/10.1371/journal.pone.0114925.t002