Table 2. 95% bootstrap confidence intervals for the linear effects of time, distance and the interaction of time and distance on changes in SNP differences between parasite pairs.

	Time (days)	Distance (km)	Time-Distance interaction
The Gambia	-0.005 - -0.001 (p=0.004)	0.086 – 0.723 (p<0.001)	-0.0003 - -0.002 (p=0.003)
Kilifi	0.190 – 0.647 (p<0.001)	0.297 – 1.363 (p=0.001)	-0.453 - -0.072 (p=0.003)
Rachuonyo South	-	0.0104 – 0.275 (p=0.018)	-

Values represent the change in the number of SNP differences between parasite pairs per day (time), per kilometre (distance) and per day/kilometre (time-distance interaction). Time, distance and the product of time and distance (time-distance interaction) were log transformed prior to running the regression analyses.