Volume 14, Number 2—February 2008
Research
Effectiveness of Personal Protective Measures to Prevent Lyme Disease
Table 2
Characteristics of Lyme disease study participants, Connecticut, July 2000 through February 2003
Characteristics | Case-patients (N = 709), no. (%) | Controls (N = 1,128), no. (%) | p value |
---|---|---|---|
Age, y | |||
Median | 48 | 49 | 0.71 |
Mean | 46 | 47 | |
Range | 15–70 | 15–70 | |
Sex | |||
Female | 376 (53) | 715 (63) | <0.001 |
Male | 333 (47) | 413 (37) | |
Race | |||
Caucasian | 689 (97) | 1094 (97) | 0.66 |
African American | 3 | 8 | |
Hispanic | 4 | 6 | |
Other | 13 | 14 | |
Underlying medical problems other than Lyme disease (e.g., diabetes, asthma) | 298 (42) | 508 (45) | 0.19 |
Had Lyme disease* | 110 (17) | 143 (14) | 0.095 |
Received Lyme vaccine† | 44 (6) | 73 (6) | 0.82 |
*Having Lyme disease was defined as the following: for case-patients, having Lyme disease at a time other than the episode for which a case-patient was enrolled in the study; for controls, having Lyme disease at a time other than the focal time of disease for the case-patient.
†A study participant was considered vaccinated if he or she received at least 1 dose of Lyme vaccine.