Supplemental tables
| 0-1 cM | 1-2 cM | 2-4 cM | 4-10 cM | |
|---|---|---|---|---|
| (Intercept) | 0.08313 | 0.1436 ** | 0.07034 | -0.0193 |
| Albania | -0.00097 | 0.0063 | -0.04232 | -0.0323 |
| Austria | 0.36424 | 0.0365 | 0.05874 | -0.1399 |
| Belgium | -0.02009 | 0.0863 | 0.02874 | 0.0374 |
| Bosnia | -0.13914 | -0.0327 | 0.02277 | 0.1032 |
| Bulgaria | -0.14857 | 0.0467 | -0.21836 | 0.2427 |
| Croatia | 0.08645 | -0.0223 | 0.02045 | -0.0371 |
| Cyprus | -0.15556 | -0.0775 | 0.08306 | 0.2158 |
| Czech Republic | -0.14301 | 0.1013 | 0.02656 | 0.1607 |
| Denmark | 0.66101 | 0.1265 | 0.03675 | 0.3095 |
| England | 0.12131 | 0.0854 | 0.03784 | 0.0199 |
| Finland | 0.24617 | 0.1491 | -0.09775 | 0.9455 |
| France | 0.05049 | 0.0533 | 0.09670 ** | 0.1655 |
| Germany | 0.06837 | 0.0454 | 0.08617 ** | 0.1288 |
| Greece | 0.06752 | -0.2266 | 0.00086 | 0.3340 |
| Hungary | 0.04491 | -0.0070 | 0.11499 * | 0.1179 |
| Ireland | 0.07873 | 0.0676 | 0.04292 | 0.0466 |
| Italy | 0.02728 | 0.0218 | 0.06694 * | 0.1607 |
| Kosovo | 0.17256 | 0.0384 | -0.02022 | 0.0109 |
| Latvia | 0.76499 | 0.1805 | -0.07177 | -0.0787 |
| Macedonia | -0.12898 | 0.1414 | -0.04692 | -0.0093 |
| Montenegro | 0.50084 | -0.0845 | -0.01400 | 0.2746 |
| Netherlands | 0.10448 | 0.0842 | 0.11875 * | 0.0423 |
| Norway | -0.46112 | -0.0176 | 0.07972 | 0.4042 |
| Poland | 0.21095 | 0.0021 | 0.05353 | 0.1314 |
| Portugal | 0.03987 | -0.0019 | 0.06771 * | 0.0664 |
| Romania | -0.24251 | 0.0545 | -0.05095 | -0.0845 |
| Russia | 0.12047 | -0.0094 | 0.00484 | 0.1568 |
| Scotland | 0.25426 | 0.0183 | 0.03205 | -0.1172 |
| Serbia | 0.06965 | 0.0384 | -0.04688 | 0.1397 |
| Slovakia | -0.00988 | -0.0458 | 0.21389 | -0.3070 |
| Slovenia | -0.19993 | 0.1456 | -0.00855 | 0.4673 |
| Spain | 0.02470 | 0.0268 | 0.08928 ** | 0.1084 |
| Sweden | 0.02043 | -0.0076 | 0.20759 ** | 0.2666 |
| Swiss French | 0.11099 | 0.1394 ** | 0.07782 * | 0.0525 |
| Swiss German | 0.14555 | 0.0943 ** | 0.08075 ** | 0.0564 |
| Switzerland | 0.13339 | 0.0102 | 0.04665 | 0.1135 |
| Turkey | -0.01107 | 0.0762 | 0.13784 | -0.1003 |
| Ukraine | -0.33535 | -0.0543 | 0.03820 | -1.2068 |
| United Kingdom | 0.10379 | 0.0868 ** | 0.11605 ** | 0.1309 |
| Yugoslavia | -0.10508 | 0.0436 | -0.00218 | 0.0018 |
Table S1:
Estimated coefficients describing the effect of changing population sample size,
as described in the text (section 4.2, “Differential sample sizes”).
Stars denote statistical significance: “*” corresponds to and “**” corresponds to .
The coefficients are from a binomial GLM with a logit link function,
applied to the number of IBD segments detected in the same set of individuals run with and without an additional 812 individuals.
For instance, the top three entries in the lefthand column tell us that if is the number of segments greater than 1cM found
between Albanian and Austrian individuals
in analysis with the full dataset,
and is the corresponding number in the analysis with only the subset,
that the model predicts that (plus binomial sampling noise).
Note that coefficients producing effect sizes larger than 4% (e.g. Austria for 0–1cM)
all correspond to populations with small sample sizes, and are not significant.
| COUNTRY_SELF | COUNTRY_GFOLX | PRIMARY_LANGUAGE | Population | |
| Albania | Albania | Albanian | Albania | 3 |
| Yugoslavia | Serbia | Albanian | Albania | 1 |
| Yugoslavia | Yugoslavia | Albanian | Albania | 5 |
| Austria | German | Austria | 3 | |
| Austria | Austria | German | Austria | 10 |
| Spain | Austria | German | Austria | 1 |
| Belgium | Belgium | Dutch | Belgium | 4 |
| Belgium | Belgium | Flemish | Belgium | 3 |
| Belgium | Belgium | French | Belgium | 28 |
| Germany | Belgium | French | Belgium | 1 |
| Switzerland | Belgium | French | Belgium | 1 |
| Bosnia | Bosnia | Bosnian | Bosnia | 4 |
| Bosnia | Bosnia | Serbian | Bosnia | 1 |
| Bosnia | Bosnia | Serbo-Croatian | Bosnia | 4 |
| Bulgaria | Bulgaria | Bulgarian | Bulgaria | 1 |
| Croatia | Croatian | Croatia | 1 | |
| Croatia | Croatia | Croatian | Croatia | 6 |
| Yugoslavia | Yugoslavia | Croatian | Croatia | 1 |
| Croatia | Croatia | Serbo-Croatian | Croatia | 1 |
| Cyprus | English | Cyprus | 1 | |
| Cyprus | Greek | Cyprus | 1 | |
| Cyprus | Cyprus | Greek | Cyprus | 1 |
| Czech Republic | Czech Republic | Czech | Czech Republic | 9 |
| Denmark | Danish | Denmark | 1 | |
| England | England | English | England | 18 |
| Turkey | England | English | England | 1 |
| United Kingdom | England | English | England | 3 |
| Finland | Finland | Finnish | Finland | 1 |
| France | French | France | 2 | |
| France | France | French | France | 82 |
| Germany | France | French | France | 1 |
| Switzerland | France | French | France | 1 |
| Germany | Germany | 1 | ||
| Germany | English | Germany | 2 | |
| Germany | Germany | French | Germany | 1 |
| Germany | German | Germany | 1 | |
| Germany | Germany | German | Germany | 63 |
| Switzerland | Germany | German | Germany | 1 |
| Hungary | Germany | Hungarian | Germany | 1 |
| Germany | Germany | Polish | Germany | 1 |
| Switzerland | Greece | French | Greece | 1 |
| Greece | Greece | Greek | Greece | 4 |
| COUNTRY_SELF | COUNTRY_GFOLX | PRIMARY_LANGUAGE | Population | |
| Hungary | Hungary | French | Hungary | 1 |
| Hungary | Hungary | Hungarian | Hungary | 17 |
| Hungary | Hungary | Russian | Hungary | 1 |
| Ireland | Ireland | 19 | ||
| Ireland | English | Ireland | 38 | |
| England | Ireland | English | Ireland | 1 |
| Ireland | Ireland | English | Ireland | 1 |
| Ireland | Ireland | French | Ireland | 1 |
| Italy | Italy | 1 | ||
| France | Italy | French | Italy | 1 |
| Italy | Italy | French | Italy | 8 |
| Switzerland | Italy | French | Italy | 9 |
| Italy | Italy | German | Italy | 1 |
| Italy | Italian | Italy | 3 | |
| France | Italy | Italian | Italy | 1 |
| Italy | Italy | Italian | Italy | 170 |
| Romania | Italy | Italian | Italy | 1 |
| Sweden | Italy | Italian | Italy | 1 |
| Switzerland | Italy | Italian | Italy | 17 |
| Kosovo | Kosovo | 1 | ||
| Yugoslavia | Kosovo | Albanian | Kosovo | 10 |
| Yugoslavia | Kosovo | Kosovan | Kosovo | 2 |
| Yugoslavia | Kosovo | Serbo-Croatian | Kosovo | 2 |
| Latvia | Latvia | Latvian | Latvia | 1 |
| Macedonia | Macedonia | Macedonian | Macedonia | 4 |
| Yugoslavia | Montenegro | Serbian | Montenegro | 1 |
| Netherlands | Netherlands | Dutch | Netherlands | 15 |
| Holland | English | Netherlands | 1 | |
| Netherlands | Netherlands | French | Netherlands | 1 |
| Norway | Norway | Norwegian | Norway | 2 |
| France | Poland | French | Poland | 1 |
| Poland | Polish | Poland | 4 | |
| France | Poland | Polish | Poland | 2 |
| Poland | Poland | Polish | Poland | 15 |
| France | Portugal | Portuguese | Portugal | 1 |
| Portugal | Portugal | Portuguese | Portugal | 114 |
| Romania | Romania | Romanian | Romania | 14 |
| Romania | Russia | Romanian | Russia | 1 |
| Russia | Russia | Russian | Russia | 5 |
| Scotland | English | Scotland | 3 | |
| Scotland | Scotland | English | Scotland | 2 |
| Yugoslavia | Serbia | Hungarian | Serbia | 1 |
| Serbia | Serbia | Serbian | Serbia | 1 |
| Yugoslavia | Serbia | Serbian | Serbia | 4 |
| Yugoslavia | Yugoslavia | Serbian | Serbia | 2 |
| Croatia | Serbia | Serbo-Croatian | Serbia | 1 |
| Yugoslavia | Serbia | Serbo-Croatian | Serbia | 2 |
| COUNTRY_SELF | COUNTRY_GFOLX | PRIMARY_LANGUAGE | Population | |
| Slovakia | Slovakia | Slovakian | Slovakia | 1 |
| Italy | Slovenia | Slovene | Slovenia | 1 |
| Slovenia | Slovenia | Slovene | Slovenia | 1 |
| Spain | Spain | Columbia | Spain | 2 |
| Switzerland | Spain | Columbia | Spain | 2 |
| Spain | Spain | French | Spain | 5 |
| Switzerland | Spain | French | Spain | 2 |
| Spain | Spain | Galician | Spain | 2 |
| Spain | Spanish | Spain | 4 | |
| Spain | Spain | Spanish | Spain | 106 |
| Switzerland | Spain | Spanish | Spain | 7 |
| Sweden | Sweden | 1 | ||
| Sweden | Sweden | Swedish | Sweden | 9 |
| Switzerland | French | Swiss French | 1 | |
| Belgium | Switzerland | French | Swiss French | 1 |
| Czech Republic | Switzerland | French | Swiss French | 1 |
| France | Switzerland | French | Swiss French | 7 |
| Poland | Switzerland | French | Swiss French | 1 |
| Portugal | Switzerland | French | Swiss French | 1 |
| Spain | Switzerland | French | Swiss French | 1 |
| Switzerland | Switzerland | French | Swiss French | 826 |
| Switzerland | Switzerland | German | Swiss German | 103 |
| Italy | Switzerland | Italian | Switzerland | 2 |
| Switzerland | Switzerland | Italian | Switzerland | 12 |
| Switzerland | Switzerland | Patois | Switzerland | 1 |
| Switzerland | Switzerland | Romansch | Switzerland | 1 |
| Spain | Switzerland | Spanish | Switzerland | 1 |
| Turkey | Turkey | Turkish | Turkey | 4 |
| Ukraine | Ukraine | Ukranian | Ukraine | 1 |
| United Kingdom | United Kingdom | 87 | ||
| United Kingdom | English | United Kingdom | 270 | |
| United Kingdom | United Kingdom | English | United Kingdom | 1 |
| Yugoslavia | Yugoslavia | 1 | ||
| Yugoslavia | Yugoslavia | French | Yugoslavia | 1 |
| Yugoslavia | Yugoslavia | Romanian | Yugoslavia | 1 |
| Yugoslavia | Yugoslavia | Serbo-Croatian | Yugoslavia | 3 |
| Yugoslavia | Yugoslavia | Yugoslavian | Yugoslavia | 4 |
Table S2:
The composition of our populations.
“COUNTRY_SELF” is the reported country of origin;
“COUNTRY_GFOLX” is the country of origin of all reported grandparents
(individuals with reported grandparents from different countries were removed);
“PRIMARY_LANGUAGE” is the reported primary language;
“Population” is our population label;
and gives the number of individuals falling in this category.
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