Expectancies as predictors of symptom improvement after antimicrobial therapy for persistent symptoms attributed to Lyme disease.

These effects were similar in the shorter-term and longer-term treatment arms for end-of-treatment (14 weeks), whereas post-treatment expectancies were significantly (or with a trend towards significance) associated with physical and mental HRQoL at follow-up in the longer-term treatment arms only (PCS: p = 0.86 vs. 0.08; CIS: p = 0.78 vs. 0.03; MCS: p = 0.70 vs. 0.03 in the shorter-term vs. longer-term treatment arms).

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