Table 5.
Comparison of weighted item responses from the Web and Telephone Surveys on Lyme Disease Exposure
| Type of variables | % | χ2 test or Fisher exact test (FET)a | Cramer’s Vb | |
|---|---|---|---|---|
| Web | Phone | |||
| Found a tick on yourself? | ||||
| • Yes | 5.4 | 4.8 | χ2 = 23.21, p < .001 | 0.11† |
| • No | 90.3 | 94.3 | ||
| • Uncertain | 4.3 | 10.9 | ||
| Ever been bitten by a tick? | ||||
| • Yes | 6.3 | 3.5 | χ2 = 8.33, p < .05 | 0.07 |
| • No | 85.1 | 88.4 | ||
| • Uncertain | 8.6 | 8.1 | ||
| Diagnosed with Lyme disease by a doctor? | ||||
| • Yes | 3.3 | 0.2 | χ2 = 31.73, p < 0.001 | 0.13† |
| • No | 95.9 | 99.6 | ||
| • Uncertain | 0.8 | 0.2 | ||
a The Fisher Exact Test (FET) was used instead of the chi-square test when at least one cell was lower than 5. Unlike the chi-square test, the FET has no formal statistic like chi-square. Thus, we reported the p value
b Effect size interpretation: † Small effect, †† Moderate effect, †††Large effect