Demographic data, underlying diseases, and animal contact history of adult community-acquired pneumonia (CAP) and acute Q fever^a.

SD = Standard deviation. aCategorical variables were analyzed using the Chi-square or Fisher’s exact test where appropriate. Continuous variables were analyzed using Student’s t-test. bConfirmed by examinations of HBsAg and anti-HCV. *CAP vs. acute Q fever in study period, p<0.05. **CAP vs. acute Q fever in pre-study period, p<0.05. ***CAP vs. total acute Q fever, p<0.05.