Two independent statistical calculations give same result.

•Continuous distribution: Probabilities of 1 or 2 chance matches are extremely small (2%–3% at best; 0–10-4 for realistic scenarios). •No assumed distribution (GLM): Probabilities of 5 chance matches making 2 groups are vanishingly small (10-5 to 10-6 at best; 0–10-7 for realistic scenarios).