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Table 3 Parameter estimates for original and shifted gamma distributions

From: Statistical modeling of volume of alcohol exposure for epidemiological studies of population health: the US example

Sex Ethnicity Age Original NESARC distribution Upshifted distribution
    k Theta Mean SD K Theta
Men White All Ages 0.436 48.132 40.268 47.275 0.726 55.501
Men White 18 - 34 0.450 58.550 50.586 59.388 0.726 69.721
Men White 35 - 54 0.441 46.951 38.993 45.778 0.726 53.743
Men White 55+ 0.430 37.486 29.713 34.883 0.726 40.953
Men Black All Ages 0.387 65.821 49.570 58.195 0.726 68.321
Men Black 18 - 34 0.380 65.850 47.957 56.301 0.726 66.098
Men Black 35 - 54 0.406 65.155 52.860 62.058 0.726 72.856
Men Black 55+ 0.362 66.530 44.642 52.410 0.726 61.529
Men Native All Ages 0.354 88.399 56.528 66.363 0.726 77.911
Men Native 18 - 34 0.354 111.130 70.687 82.987 0.726 97.427
Men Native 35 - 54 0.376 87.400 58.111 68.223 0.726 80.094
Men Native Asian/Pac. 55+ 0.345 46.584 27.412 32.181 0.726 37.781
Men Islander Asian/Pac. All Ages 0.417 28.224 22.544 26.467 0.726 31.072
Men Islander Asian/Pac. 18 - 34 0.460 27.784 26.022 30.549 0.726 35.865
Men Islander Asian/Pac. 35 - 54 0.412 30.006 22.784 26.749 0.726 31.403
Men Islander 55+ 0.345 17.665 11.801 13.854 0.726 16.265
Men Hispanic All Ages 0.426 40.756 40.726 47.812 0.726 56.131
Men Hispanic 18 - 34 0.422 43.417 36.148 42.438 0.726 49.823
Men Hispanic 35 - 54 0.433 40.633 52.215 61.300 0.726 71.967
Men Hispanic 55+ 0.426 31.678 23.517 27.609 0.726 32.413
Women White All Ages 0.391 19.778 14.785 18.361 0.648 22.801
Women White 18 - 34 0.399 23.009 17.353 21.376 0.659 26.330
Women White 35 - 54 0.410 18.282 14.224 17.702 0.646 22.030
Women White 55+ 0.366 17.852 12.495 15.672 0.636 19.657
Women Black All Ages 0.316 27.729 20.069 24.565 0.668 30.066
Women Black 18 - 34 0.311 30.996 19.844 24.299 0.667 29.756
Women Black 35 - 54 0.326 27.461 22.642 27.585 0.674 33.607
Women Black 55+ 0.310 19.494 12.313 15.459 0.634 19.408
Women Native All Ages 0.295 54.514 33.405 40.221 0.690 48.427
Women Native 18 - 34 0.297 87.190 49.135 58.688 0.701 70.098
Women Native 35 - 54 0.304 42.472 27.347 33.109 0.682 40.084
Women Native Asian/Pac. 55+ 0.336 20.350 19.866 24.326 0.667 29.787
Women Islander Asian/Pac. All Ages 0.318 24.855 14.464 17.984 0.647 22.360
Women Islander Asian/Pac. 18 - 34 0.311 42.172 24.428 29.682 0.677 36.065
Women Islander Asian/Pac. 35 - 54 0.441 6.702 5.460 7.413 0.542 10.065
Women Islander 55+ 0.360 5.835 2.430 3.856 0.397 6.118
Women Hispanic All Ages 0.341 17.855 18.482 22.701 0.663 27.883
Women Hispanic 18 - 34 0.325 23.545 15.423 19.109 0.651 23.677
Women Hispanic 35 - 54 0.377 12.815 24.680 29.977 0.678 36.411
Women Hispanic 55+ 0.330 13.513 10.682 13.544 0.622 17.173