marginally significantP = 0.098
For Creoles, the percentage of RDT reactive persons decreased with age with a significant slope of − 0.72 * age (in years) ( R 2 = 70.34, P = 0.0003) whereas for Qom the reactivity increased with a slope of 0.25*age, though it was marginally significant ( R 2 = 45.27, P = 0.098).