Table 2 The best fitting parameters for the TIBD model, with the 95% confidence intervals (CI) shown below, considering only individuals from the PCA groups A or B.

From: Genomic insights into the population structure and history of the Irish Travellers

Parameter

PCA Group

NA

NS,T

NC,S

NC,T

TS

TG

Best fit

A

86,000

21,000

7.6∙106

450

15

15

95% CI

A

81,000–97,000

2700–3.3∙105

1.1∙106–4.5∙109

100–6500

13–18

11–18

Best fit

B

90,000

56,000

1.5∙108

8

10

13

95% CI

B

84,000–96,000

30–5.4∙106

2.2∙106–2.5∙1010

3–700

3–14

12–16

  1. Shown are the Irish ancestral effective population size (NA), the initial Traveller effective population size (NS,T), the current Irish (NC,S) and Traveller (NC,T) effective population sizes, and the time in generations of the split (TS) and start of exponential Irish growth (TG).