“Ticking Bomb”: The Impact of Climate Change on the Incidence of Lyme Disease
Table 2
The impacts of temperature and precipitation on the incidence of LD.
Main results
Dep. var.: LD incidence
(1)
(2)
(3)
Avg. temp.: below 5°C
7.9101 (6.1820)
4.9673 (5.9583)
1.6156 (5.7073)
Avg. temp.: 5–7°C
17.2713 (5.6208)
13.3615 (5.4461)
10.7294 (5.0919)
Avg. temp.: 7–9°C
21.3359 (5.2593)
16.2189 (5.2152)
15.1306 (4.8862)
Avg. temp.: 9–11°C
19.9290 (4.3244)
15.4690 (4.5382)
14.4033 (4.2444)
Avg. temp.: 11–13°C
9.7629 (2.9059)
6.5636 (3.1989)
5.3232 (2.9025)
Avg. temp.: 13–15°C
6.6229 (2.0306)
4.7761 (2.1972)
3.8847 (1.9730)
Reference: above 15°C
0
0
0
Total prcp.: below 70 cm
13.0452 (5.4358)
13.5556 (4.5898)
4.6664 (4.5738)
Total prcp.: 70–120 cm
10.7113 (4.7829)
11.8325 (4.0619)
4.2597 (3.9230)
Total prcp.: 120–170 cm
8.1580 (4.1505)
10.4118 (3.6474)
5.3288 (3.4688)
Total prcp.: 170–220 cm
3.7551 (3.1761)
6.3591 (2.8603)
3.6003 (2.6573)
Total prcp.: 220–270 cm
1.8596 (2.8608)
2.3633 (2.8913)
1.2022 (2.8126)
Reference: above 270 cm
0
0
0
Year fixed effects
Yes
Yes
Yes
County fixed effects
Yes
Yes
Yes
Linear trend by state
Yes
Yes
Quadratic trend by state
Yes
Observations
7,956
7,956
7,956
R2
0.6771
0.7068
0.7226
Adjusted R2
0.656
0.687
0.703
Note: this table presents the estimated impacts of climatic variables on the incidence of LD–cases per 100,000 population. Avg. temp. is annual average temperature, and total prcp. is annual total precipitation. Robust standard errors clustered at the county level are reported in parentheses. Significance at 1 percent; significance at 5 percent; significance at 10 percent.
