Percentage of single, first, middle and last authorship papers vs. the size of portfolio. Important note: the larger the portfolio, the less data we have (No. portfolios), thus the rows had been bootstrapped 10,000 times. This is crucial for >50 item portfolios where we have less than 1,000 of portfolios passing the threshold. The data refers to research-only articles. General conclusion: - as expected single author papers are less abundant (e.g. it is expected that single author paper will be rather non-research article for instance the editorial, comment, review rather than new research) - on average there is more middle author papers in research only fraction, which again is expected as research paper has more authors on average (it seems that writing non-research item for instance the review requires less authors, which is reasonable) Single First Middle Last No. portfolios 3 1.380+-8.283 34.260+-33.051 52.941+-34.279 11.419+-23.654 44969 4 1.194+-7.166 33.674+-29.977 54.326+-31.185 10.806+-21.446 33681 5 1.190+-6.721 32.690+-27.301 55.801+-28.793 10.319+-20.004 26474 6 1.050+-5.994 32.168+-25.798 56.757+-27.003 10.025+-18.904 22044 7 1.088+-5.892 31.458+-24.409 57.122+-26.088 10.331+-18.354 18366 8 1.091+-5.544 30.528+-23.273 57.853+-25.045 10.529+-17.980 15894 9 1.092+-5.639 30.162+-22.592 57.709+-24.383 11.037+-18.029 13644 10 0.900+-4.764 29.007+-21.600 58.518+-23.845 11.575+-18.141 12189 11 0.998+-5.178 28.859+-20.875 58.559+-23.113 11.584+-17.683 10502 12 1.013+-4.720 28.066+-20.541 58.709+-22.735 12.213+-17.712 9528 13 0.935+-4.474 27.175+-19.659 59.270+-22.280 12.620+-17.794 8647 14 0.939+-4.510 26.187+-19.080 59.335+-22.141 13.539+-18.230 7798 15 0.939+-4.524 25.676+-18.784 59.676+-21.906 13.709+-17.953 7228 16 0.934+-4.528 24.763+-18.391 59.692+-21.640 14.611+-18.551 6350 17 1.047+-5.222 24.708+-17.999 59.620+-21.731 14.624+-18.611 5934 18 0.872+-4.081 23.809+-17.650 59.409+-21.325 15.909+-18.841 5479 19 0.781+-3.718 23.155+-17.509 59.820+-21.460 16.244+-18.628 4992 20 0.798+-3.681 22.613+-17.073 59.856+-21.485 16.734+-19.026 4721 21 1.007+-4.440 22.195+-16.848 59.525+-21.153 17.272+-18.905 4255 22 1.037+-4.417 21.585+-16.549 59.745+-20.976 17.633+-18.936 3907 23 0.780+-3.390 20.918+-15.660 59.989+-20.416 18.313+-19.177 3718 24 0.825+-3.758 20.361+-15.753 59.776+-21.321 19.038+-19.749 3447 25 0.817+-3.535 20.423+-15.685 59.348+-20.385 19.412+-19.549 3252 26 0.823+-3.566 19.858+-15.579 59.656+-20.768 19.663+-19.353 2974 27 0.837+-3.389 19.707+-15.259 60.049+-20.443 19.407+-19.284 2689 28 0.847+-3.757 19.522+-15.294 59.747+-20.486 19.885+-18.817 2578 29 0.804+-2.975 18.969+-14.936 59.666+-20.249 20.561+-19.078 2442 30 0.804+-3.237 18.399+-15.049 58.998+-21.029 21.799+-20.121 2234 31 0.795+-3.992 18.275+-14.785 60.129+-20.624 20.801+-19.723 2171 32 0.793+-3.632 17.629+-14.525 59.301+-20.682 22.276+-19.986 1980 33 0.998+-4.098 17.819+-14.898 58.910+-20.638 22.273+-19.557 1861 34 0.752+-2.616 16.903+-13.841 59.441+-20.248 22.904+-19.627 1783 35 0.791+-2.761 17.363+-14.089 58.970+-19.909 22.876+-19.380 1697 36 0.843+-3.157 17.037+-14.214 58.169+-20.440 23.951+-20.197 1552 37 0.750+-3.422 15.701+-13.679 59.334+-20.200 24.215+-19.952 1586 38 0.718+-2.631 16.091+-13.549 58.903+-20.521 24.289+-20.183 1405 39 0.814+-3.360 15.664+-13.227 59.550+-20.078 23.972+-19.744 1303 40 0.686+-2.273 15.795+-13.456 59.847+-20.506 23.671+-19.594 1233 41 0.831+-3.193 15.473+-13.486 58.801+-20.478 24.895+-20.100 1207 42 0.751+-3.817 14.576+-12.733 60.057+-19.942 24.616+-19.912 1165 43 0.762+-2.439 15.430+-13.221 59.556+-20.352 24.252+-19.879 1108 44 0.687+-1.901 14.642+-13.166 59.259+-19.913 25.411+-19.689 1048 45 0.923+-4.101 14.603+-12.966 58.937+-20.414 25.538+-20.127 1014 46 0.801+-3.131 13.514+-12.028 60.824+-19.865 24.861+-19.094 939 47 0.743+-2.187 14.492+-13.046 58.906+-19.720 25.858+-19.684 930 48 0.849+-3.477 13.913+-13.105 59.010+-19.788 26.229+-19.483 827 49 0.753+-2.591 14.131+-12.877 60.214+-20.416 24.902+-19.415 772 50 0.909+-3.396 13.783+-12.561 59.228+-19.876 26.080+-19.957 774 51 0.835+-3.998 13.808+-12.211 58.557+-19.669 26.800+-19.015 702 52 0.853+-2.703 13.529+-12.358 59.052+-20.204 26.565+-20.275 715 53 0.655+-2.225 13.789+-12.249 58.539+-19.942 27.016+-19.158 656 54 0.836+-2.482 12.679+-11.868 58.645+-20.151 27.840+-20.131 688 55 0.648+-1.866 11.975+-11.085 59.745+-19.839 27.632+-19.849 616 56 0.971+-3.946 13.365+-13.641 58.799+-20.030 26.865+-19.565 616 57 1.177+-5.208 12.247+-12.119 59.518+-20.079 27.058+-19.349 615 58 0.617+-3.432 10.347+-11.880 65.948+-23.328 23.088+-20.562 640 59 0.780+-2.596 12.534+-11.795 59.886+-20.541 26.799+-19.484 552 60 0.763+-2.786 12.278+-11.559 58.173+-19.616 28.786+-19.499 559 61 0.689+-2.331 11.254+-11.263 59.291+-19.111 28.766+-19.487 463 62 0.610+-1.663 12.005+-11.923 58.757+-19.578 28.629+-19.416 447 63 0.750+-2.379 11.751+-11.751 59.358+-19.507 28.141+-19.881 424 64 0.613+-1.822 11.784+-11.490 58.273+-20.658 29.330+-20.369 429 65 0.652+-1.446 12.257+-12.254 57.313+-19.124 29.779+-19.361 401 66 0.732+-2.138 11.831+-11.231 59.378+-18.293 28.060+-18.161 429 67 0.813+-2.362 11.519+-10.763 57.974+-18.953 29.694+-18.606 386 68 0.986+-4.039 11.317+-12.043 60.323+-20.463 27.374+-19.186 383 69 0.711+-1.733 11.889+-11.604 59.726+-20.278 27.675+-19.361 346 70 0.915+-4.095 11.176+- 9.823 58.476+-18.274 29.433+-18.873 350 71 0.581+-1.559 11.211+-11.290 60.264+-19.644 27.945+-19.235 371 72 0.597+-1.428 10.572+-11.089 59.816+-19.944 29.016+-19.653 303 73 1.285+-6.514 11.571+-11.709 56.214+-20.008 30.931+-19.798 323 74 0.710+-2.612 10.699+-10.892 58.622+-19.189 29.970+-18.964 316 75 0.990+-2.595 10.047+-10.631 61.387+-20.152 27.576+-19.779 292 76 1.046+-4.652 11.238+-11.583 58.666+-20.003 29.050+-19.957 294 77 0.716+-2.580 10.629+-11.040 59.610+-20.770 29.046+-20.478 301 78 0.610+-1.849 9.325+- 9.723 61.094+-19.908 28.971+-18.368 261 79 0.909+-2.570 9.528+- 9.396 58.509+-19.882 31.054+-19.028 260 80 0.598+-1.293 9.263+- 8.634 60.192+-18.345 29.948+-18.184 251 81 0.905+-3.267 9.458+-10.038 60.201+-21.051 29.436+-19.844 238 82 0.578+-1.836 10.464+-10.024 60.869+-18.375 28.088+-18.615 232 83 0.643+-1.441 10.352+- 9.920 60.152+-18.069 28.853+-17.875 212 84 0.861+-2.705 9.442+- 9.311 57.823+-17.191 31.875+-17.827 210 85 0.555+-1.399 9.657+- 9.854 58.577+-17.922 31.211+-19.017 226 86 0.813+-3.363 9.772+-10.393 58.877+-19.054 30.539+-19.014 196 87 1.073+-3.856 9.510+-10.790 57.054+-20.211 32.363+-20.356 188 88 0.587+-1.701 10.994+-12.358 58.868+-20.416 29.551+-19.698 180 89 1.163+-4.010 8.492+- 9.073 60.683+-18.656 29.661+-17.923 176 90 0.606+-1.298 9.532+- 9.371 58.402+-18.139 31.459+-18.583 144 91 0.502+-1.386 8.379+- 9.133 58.610+-20.110 32.508+-19.768 170 92 1.185+-6.106 8.558+- 8.160 59.011+-20.369 31.246+-20.021 171 93 0.513+-1.049 8.568+- 8.092 61.236+-17.628 29.682+-18.231 144 94 0.627+-1.439 8.993+- 8.827 61.518+-18.521 28.862+-17.611 158 95 0.508+-1.091 9.190+-10.099 64.794+-19.374 25.508+-19.080 143 96 0.582+-1.409 8.927+-11.546 59.708+-20.188 30.783+-18.316 159 97 0.758+-1.473 8.880+- 8.247 62.519+-17.751 27.844+-16.956 136 98 0.562+-1.834 8.543+- 9.439 60.384+-18.139 30.511+-18.632 143 99 0.964+-2.528 8.635+- 9.823 60.370+-21.707 30.030+-20.460 129 100 0.536+-1.226 7.586+- 7.629 60.952+-19.619 30.926+-19.352 142 >100 0.638+-2.156 7.161+- 8.847 62.791+-20.440 29.409+-18.944 5712 Total: 338889 Bootstrapped 10000 times