Frequencies for first 10,000 rows of record_1 variable in linkpe2012usnum datas Record-Axis | Condition | Code 1 (ICD | 10th | Revision) | Freq. Percent Cum. ------------+----------------------------------- A021 | 1 0.01 0.01 A047 | 1 0.01 0.02 A049 | 1 0.01 0.03 A090 | 114 1.14 1.17 A099 | 6 0.06 1.23 A310 | 1 0.01 1.24 A379 | 5 0.05 1.29 A390 | 1 0.01 1.30 A391 | 1 0.01 1.31 A394 | 1 0.01 1.32 A400 | 2 0.02 1.34 A401 | 7 0.07 1.41 A402 | 1 0.01 1.42 A403 | 2 0.02 1.44 A410 | 4 0.04 1.48 A412 | 2 0.02 1.50 A415 | 12 0.12 1.62 A419 | 59 0.59 2.21 A46 | 1 0.01 2.22 A490 | 2 0.02 2.24 A491 | 1 0.01 2.25 A492 | 2 0.02 2.27 A498 | 1 0.01 2.28 A811 | 1 0.01 2.29 A86 | 2 0.02 2.31 B004 | 1 0.01 2.32 B009 | 2 0.02 2.34 B199 | 1 0.01 2.35 B206 | 1 0.01 2.36 B250 | 3 0.03 2.39 B270 | 2 0.02 2.41 B332 | 2 0.02 2.43 B348 | 19 0.19 2.62 B349 | 10 0.10 2.72 B377 | 2 0.02 2.74 B49 | 2 0.02 2.76 B59 | 1 0.01 2.77 B99 | 1 0.01 2.78 C222 | 2 0.02 2.80 C229 | 2 0.02 2.82 C259 | 1 0.01 2.83 C380 | 1 0.01 2.84 C419 | 1 0.01 2.85 C493 | 1 0.01 2.86 C494 | 2 0.02 2.88 C499 | 2 0.02 2.90 C64 | 1 0.01 2.91 C716 | 1 0.01 2.92 C719 | 5 0.05 2.97 C729 | 1 0.01 2.98 C749 | 3 0.03 3.01 C80 | 5 0.05 3.06 C835 | 1 0.01 3.07 C910 | 2 0.02 3.09 C920 | 2 0.02 3.11 C921 | 1 0.01 3.12 C925 | 1 0.01 3.13 C930 | 1 0.01 3.14 C950 | 2 0.02 3.16 C957 | 1 0.01 3.17 C959 | 2 0.02 3.19 D151 | 2 0.02 3.21 D180 | 6 0.06 3.27 D181 | 4 0.04 3.31 D350 | 1 0.01 3.32 D371 | 1 0.01 3.33 D376 | 2 0.02 3.35 D410 | 1 0.01 3.36 D432 | 7 0.07 3.43 D469 | 1 0.01 3.44 D471 | 1 0.01 3.45 D489 | 5 0.05 3.50 D560 | 2 0.02 3.52 D569 | 1 0.01 3.53 D580 | 1 0.01 3.54 D582 | 2 0.02 3.56 D65 | 2 0.02 3.58 D66 | 2 0.02 3.60 D689 | 12 0.12 3.72 D692 | 1 0.01 3.73 D696 | 1 0.01 3.74 D732 | 2 0.02 3.76 D735 | 1 0.01 3.77 D761 | 6 0.06 3.83 D762 | 1 0.01 3.84 D819 | 1 0.01 3.85 D821 | 3 0.03 3.88 D848 | 1 0.01 3.89 D849 | 2 0.02 3.91 E320 | 1 0.01 3.92 E343 | 1 0.01 3.93 E349 | 1 0.01 3.94 E43 | 2 0.02 3.96 E46 | 1 0.01 3.97 E711 | 1 0.01 3.98 E712 | 1 0.01 3.99 E713 | 3 0.03 4.02 E722 | 7 0.07 4.09 E723 | 1 0.01 4.10 E724 | 1 0.01 4.11 E740 | 3 0.03 4.14 E744 | 1 0.01 4.15 E752 | 4 0.04 4.19 E778 | 1 0.01 4.20 E798 | 1 0.01 4.21 E803 | 1 0.01 4.22 E831 | 3 0.03 4.25 E841 | 1 0.01 4.26 E849 | 2 0.02 4.28 E86 | 3 0.03 4.31 E871 | 2 0.02 4.33 E872 | 8 0.08 4.41 E875 | 2 0.02 4.43 E878 | 3 0.03 4.46 E880 | 1 0.01 4.47 E888 | 3 0.03 4.50 E889 | 28 0.28 4.78 F79 | 1 0.01 4.79 G000 | 1 0.01 4.80 G001 | 3 0.03 4.83 G002 | 9 0.09 4.92 G009 | 4 0.04 4.96 G039 | 9 0.09 5.05 G049 | 3 0.03 5.08 G062 | 1 0.01 5.09 G120 | 3 0.03 5.12 G128 | 1 0.01 5.13 G129 | 51 0.51 5.64 G318 | 7 0.07 5.71 G319 | 2 0.02 5.73 G404 | 4 0.04 5.77 G409 | 5 0.05 5.82 G419 | 3 0.03 5.85 G473 | 1 0.01 5.86 G588 | 1 0.01 5.87 G629 | 1 0.01 5.88 G709 | 5 0.05 5.93 G711 | 2 0.02 5.95 G712 | 5 0.05 6.00 G713 | 2 0.02 6.02 G729 | 2 0.02 6.04 G808 | 1 0.01 6.05 G809 | 1 0.01 6.06 G908 | 2 0.02 6.08 G918 | 1 0.01 6.09 G919 | 7 0.07 6.16 G930 | 2 0.02 6.18 G931 | 19 0.19 6.37 G934 | 13 0.13 6.50 G935 | 1 0.01 6.51 G936 | 1 0.01 6.52 G938 | 9 0.09 6.61 G939 | 1 0.01 6.62 G950 | 1 0.01 6.63 G958 | 1 0.01 6.64 G968 | 1 0.01 6.65 H669 | 3 0.03 6.68 I050 | 1 0.01 6.69 I119 | 1 0.01 6.70 I219 | 4 0.04 6.74 I249 | 1 0.01 6.75 I258 | 1 0.01 6.76 I269 | 1 0.01 6.77 I270 | 2 0.02 6.79 I272 | 47 0.47 7.26 I279 | 2 0.02 7.28 I288 | 7 0.07 7.35 I301 | 1 0.01 7.36 I313 | 4 0.04 7.40 I319 | 2 0.02 7.42 I400 | 8 0.08 7.50 I401 | 1 0.01 7.51 I409 | 1 0.01 7.52 I420 | 7 0.07 7.59 I422 | 17 0.17 7.76 I424 | 11 0.11 7.87 I425 | 1 0.01 7.88 I429 | 13 0.13 8.01 I458 | 1 0.01 8.02 I469 | 5 0.05 8.07 I490 | 1 0.01 8.08 I499 | 2 0.02 8.10 I500 | 2 0.02 8.12 I509 | 8 0.08 8.20 I514 | 14 0.14 8.34 I517 | 9 0.09 8.43 I519 | 6 0.06 8.49 I608 | 1 0.01 8.50 I609 | 2 0.02 8.52 I613 | 1 0.01 8.53 I615 | 14 0.14 8.67 I619 | 2 0.02 8.69 I629 | 3 0.03 8.72 I639 | 3 0.03 8.75 I64 | 2 0.02 8.77 I678 | 29 0.29 9.06 I709 | 3 0.03 9.09 I728 | 1 0.01 9.10 I741 | 1 0.01 9.11 I749 | 1 0.01 9.12 I776 | 1 0.01 9.13 I779 | 1 0.01 9.14 I788 | 5 0.05 9.19 I809 | 1 0.01 9.20 I822 | 1 0.01 9.21 I890 | 4 0.04 9.25 I898 | 4 0.04 9.29 I959 | 1 0.01 9.30 J040 | 1 0.01 9.31 J041 | 2 0.02 9.33 J069 | 2 0.02 9.35 J100 | 1 0.01 9.36 J101 | 1 0.01 9.37 J110 | 1 0.01 9.38 J111 | 2 0.02 9.40 J120 | 5 0.05 9.45 J121 | 2 0.02 9.47 J128 | 1 0.01 9.48 J129 | 5 0.05 9.53 J14 | 2 0.02 9.55 J150 | 1 0.01 9.56 J152 | 1 0.01 9.57 J154 | 3 0.03 9.60 J159 | 6 0.06 9.66 J180 | 25 0.25 9.91 J181 | 3 0.03 9.94 J189 | 24 0.24 10.18 J205 | 1 0.01 10.19 J208 | 2 0.02 10.21 J209 | 7 0.07 10.28 J210 | 4 0.04 10.32 J219 | 11 0.11 10.43 J22 | 2 0.02 10.45 J385 | 1 0.01 10.46 J386 | 1 0.01 10.47 J392 | 1 0.01 10.48 J398 | 2 0.02 10.50 J40 | 4 0.04 10.54 J42 | 5 0.05 10.59 J439 | 2 0.02 10.61 J440 | 1 0.01 10.62 J450 | 1 0.01 10.63 J690 | 6 0.06 10.69 J80 | 10 0.10 10.79 J81 | 3 0.03 10.82 J840 | 1 0.01 10.83 J841 | 2 0.02 10.85 J849 | 17 0.17 11.02 J850 | 1 0.01 11.03 J851 | 1 0.01 11.04 J860 | 1 0.01 11.05 J961 | 2 0.02 11.07 J969 | 7 0.07 11.14 J980 | 2 0.02 11.16 J981 | 1 0.01 11.17 J982 | 4 0.04 11.21 J984 | 96 0.96 12.17 J988 | 5 0.05 12.22 J989 | 3 0.03 12.25 K070 | 1 0.01 12.26 K219 | 10 0.10 12.36 K296 | 1 0.01 12.37 K319 | 1 0.01 12.38 K358 | 1 0.01 12.39 K449 | 10 0.10 12.49 K469 | 2 0.02 12.51 K519 | 1 0.01 12.52 K529 | 2 0.02 12.54 K550 | 9 0.09 12.63 K559 | 2 0.02 12.65 K561 | 1 0.01 12.66 K562 | 5 0.05 12.71 K566 | 2 0.02 12.73 K598 | 1 0.01 12.74 K631 | 8 0.08 12.82 K650 | 1 0.01 12.83 K659 | 4 0.04 12.87 K720 | 2 0.02 12.89 K729 | 12 0.12 13.01 K760 | 2 0.02 13.03 K766 | 1 0.01 13.04 K768 | 6 0.06 13.10 K769 | 1 0.01 13.11 K831 | 2 0.02 13.13 K902 | 4 0.04 13.17 L208 | 1 0.01 13.18 M318 | 1 0.01 13.19 M622 | 1 0.01 13.20 N049 | 2 0.02 13.22 N10 | 1 0.01 13.23 N12 | 3 0.03 13.26 N139 | 2 0.02 13.28 N159 | 1 0.01 13.29 N179 | 13 0.13 13.42 N189 | 2 0.02 13.44 N19 | 19 0.19 13.63 N288 | 1 0.01 13.64 N289 | 1 0.01 13.65 N328 | 1 0.01 13.66 N390 | 2 0.02 13.68 P000 | 24 0.24 13.92 P001 | 2 0.02 13.94 P002 | 5 0.05 13.99 P003 | 6 0.06 14.05 P005 | 9 0.09 14.14 P008 | 13 0.13 14.27 P009 | 2 0.02 14.29 P010 | 161 1.61 15.90 P011 | 286 2.86 18.76 P012 | 42 0.42 19.18 P013 | 4 0.04 19.22 P014 | 1 0.01 19.23 P015 | 58 0.58 19.81 P018 | 23 0.23 20.04 P020 | 6 0.06 20.10 P021 | 155 1.55 21.65 P022 | 8 0.08 21.73 P023 | 12 0.12 21.85 P024 | 7 0.07 21.92 P025 | 2 0.02 21.94 P026 | 6 0.06 22.00 P027 | 162 1.62 23.62 P030 | 2 0.02 23.64 P031 | 1 0.01 23.65 P034 | 1 0.01 23.66 P035 | 1 0.01 23.67 P036 | 1 0.01 23.68 P038 | 14 0.14 23.82 P039 | 21 0.21 24.03 P042 | 2 0.02 24.05 P044 | 10 0.10 24.15 P051 | 1 0.01 24.16 P059 | 33 0.33 24.49 P070 | 14 0.14 24.63 P071 | 1 0.01 24.64 P072 | 1,077 10.77 35.41 P073 | 270 2.70 38.11 P112 | 2 0.02 38.13 P119 | 1 0.01 38.14 P158 | 2 0.02 38.16 P159 | 1 0.01 38.17 P209 | 51 0.51 38.68 P210 | 2 0.02 38.70 P219 | 69 0.69 39.39 P220 | 155 1.55 40.94 P229 | 18 0.18 41.12 P235 | 1 0.01 41.13 P236 | 4 0.04 41.17 P239 | 14 0.14 41.31 P240 | 12 0.12 41.43 P241 | 1 0.01 41.44 P249 | 1 0.01 41.45 P250 | 13 0.13 41.58 P251 | 22 0.22 41.80 P261 | 3 0.03 41.83 P268 | 2 0.02 41.85 P269 | 57 0.57 42.42 P271 | 24 0.24 42.66 P279 | 30 0.30 42.96 P280 | 78 0.78 43.74 P281 | 1 0.01 43.75 P284 | 1 0.01 43.76 P285 | 5 0.05 43.81 P288 | 9 0.09 43.90 P289 | 3 0.03 43.93 P290 | 112 1.12 45.05 P291 | 164 1.64 46.69 P292 | 5 0.05 46.74 P293 | 24 0.24 46.98 P298 | 8 0.08 47.06 P350 | 1 0.01 47.07 P351 | 9 0.09 47.16 P352 | 22 0.22 47.38 P358 | 1 0.01 47.39 P360 | 9 0.09 47.48 P361 | 2 0.02 47.50 P362 | 1 0.01 47.51 P363 | 1 0.01 47.52 P364 | 16 0.16 47.68 P368 | 12 0.12 47.80 P369 | 178 1.78 49.58 P372 | 2 0.02 49.60 P375 | 5 0.05 49.65 P378 | 9 0.09 49.74 P393 | 1 0.01 49.75 P398 | 4 0.04 49.79 P399 | 9 0.09 49.88 P504 | 5 0.05 49.93 P509 | 1 0.01 49.94 P521 | 1 0.01 49.95 P522 | 8 0.08 50.03 P523 | 107 1.07 51.10 P524 | 7 0.07 51.17 P528 | 1 0.01 51.18 P529 | 28 0.28 51.46 P543 | 3 0.03 51.49 P548 | 4 0.04 51.53 P549 | 7 0.07 51.60 P592 | 1 0.01 51.61 P60 | 15 0.15 51.76 P612 | 3 0.03 51.79 P613 | 2 0.02 51.81 P614 | 12 0.12 51.93 P701 | 3 0.03 51.96 P77 | 138 1.38 53.34 P780 | 41 0.41 53.75 P783 | 1 0.01 53.76 P819 | 2 0.02 53.78 P832 | 67 0.67 54.45 P90 | 7 0.07 54.52 P912 | 7 0.07 54.59 P916 | 61 0.61 55.20 P923 | 1 0.01 55.21 P940 | 1 0.01 55.22 P942 | 4 0.04 55.26 P960 | 11 0.11 55.37 P964 | 7 0.07 55.44 P968 | 17 0.17 55.61 P969 | 5 0.05 55.66 Q000 | 114 1.14 56.80 Q002 | 1 0.01 56.81 Q019 | 9 0.09 56.90 Q02 | 5 0.05 56.95 Q030 | 2 0.02 56.97 Q031 | 7 0.07 57.04 Q039 | 26 0.26 57.30 Q040 | 4 0.04 57.34 Q042 | 42 0.42 57.76 Q043 | 24 0.24 58.00 Q044 | 1 0.01 58.01 Q045 | 1 0.01 58.02 Q046 | 6 0.06 58.08 Q048 | 6 0.06 58.14 Q049 | 18 0.18 58.32 Q054 | 3 0.03 58.35 Q059 | 8 0.08 58.43 Q070 | 1 0.01 58.44 Q078 | 1 0.01 58.45 Q079 | 5 0.05 58.50 Q200 | 11 0.11 58.61 Q201 | 17 0.17 58.78 Q203 | 15 0.15 58.93 Q204 | 5 0.05 58.98 Q210 | 8 0.08 59.06 Q211 | 6 0.06 59.12 Q212 | 13 0.13 59.25 Q213 | 23 0.23 59.48 Q214 | 1 0.01 59.49 Q218 | 2 0.02 59.51 Q219 | 1 0.01 59.52 Q220 | 1 0.01 59.53 Q221 | 2 0.02 59.55 Q224 | 2 0.02 59.57 Q225 | 14 0.14 59.71 Q226 | 3 0.03 59.74 Q228 | 3 0.03 59.77 Q229 | 1 0.01 59.78 Q230 | 10 0.10 59.88 Q231 | 2 0.02 59.90 Q232 | 1 0.01 59.91 Q233 | 2 0.02 59.93 Q234 | 109 1.09 61.02 Q242 | 2 0.02 61.04 Q244 | 1 0.01 61.05 Q245 | 5 0.05 61.10 Q246 | 3 0.03 61.13 Q248 | 11 0.11 61.24 Q249 | 265 2.65 63.89 Q250 | 11 0.11 64.00 Q251 | 12 0.12 64.12 Q253 | 1 0.01 64.13 Q254 | 3 0.03 64.16 Q255 | 12 0.12 64.28 Q256 | 10 0.10 64.38 Q259 | 1 0.01 64.39 Q262 | 8 0.08 64.47 Q264 | 2 0.02 64.49 Q268 | 1 0.01 64.50 Q279 | 2 0.02 64.52 Q282 | 1 0.01 64.53 Q283 | 3 0.03 64.56 Q288 | 2 0.02 64.58 Q289 | 1 0.01 64.59 Q315 | 3 0.03 64.62 Q318 | 5 0.05 64.67 Q319 | 2 0.02 64.69 Q321 | 9 0.09 64.78 Q330 | 1 0.01 64.79 Q333 | 4 0.04 64.83 Q336 | 81 0.81 65.64 Q338 | 1 0.01 65.65 Q339 | 6 0.06 65.71 Q348 | 1 0.01 65.72 Q359 | 1 0.01 65.73 Q379 | 1 0.01 65.74 Q391 | 1 0.01 65.75 Q392 | 3 0.03 65.78 Q393 | 1 0.01 65.79 Q400 | 1 0.01 65.80 Q410 | 1 0.01 65.81 Q419 | 2 0.02 65.83 Q423 | 1 0.01 65.84 Q429 | 1 0.01 65.85 Q431 | 4 0.04 65.89 Q433 | 4 0.04 65.93 Q439 | 5 0.05 65.98 Q442 | 6 0.06 66.04 Q451 | 1 0.01 66.05 Q601 | 15 0.15 66.20 Q602 | 30 0.30 66.50 Q605 | 5 0.05 66.55 Q606 | 28 0.28 66.83 Q611 | 5 0.05 66.88 Q612 | 1 0.01 66.89 Q613 | 41 0.41 67.30 Q614 | 19 0.19 67.49 Q618 | 1 0.01 67.50 Q619 | 5 0.05 67.55 Q620 | 2 0.02 67.57 Q633 | 1 0.01 67.58 Q639 | 5 0.05 67.63 Q642 | 7 0.07 67.70 Q643 | 3 0.03 67.73 Q645 | 1 0.01 67.74 Q649 | 1 0.01 67.75 Q658 | 1 0.01 67.76 Q688 | 5 0.05 67.81 Q743 | 3 0.03 67.84 Q750 | 1 0.01 67.85 Q759 | 1 0.01 67.86 Q764 | 1 0.01 67.87 Q766 | 1 0.01 67.88 Q768 | 1 0.01 67.89 Q770 | 2 0.02 67.91 Q771 | 16 0.16 68.07 Q772 | 5 0.05 68.12 Q773 | 1 0.01 68.13 Q774 | 3 0.03 68.16 Q780 | 15 0.15 68.31 Q789 | 25 0.25 68.56 Q790 | 92 0.92 69.48 Q792 | 9 0.09 69.57 Q793 | 12 0.12 69.69 Q794 | 5 0.05 69.74 Q795 | 3 0.03 69.77 Q798 | 3 0.03 69.80 Q811 | 1 0.01 69.81 Q819 | 8 0.08 69.89 Q840 | 1 0.01 69.90 Q848 | 1 0.01 69.91 Q870 | 3 0.03 69.94 Q871 | 12 0.12 70.06 Q872 | 10 0.10 70.16 Q873 | 2 0.02 70.18 Q878 | 13 0.13 70.31 Q893 | 4 0.04 70.35 Q894 | 12 0.12 70.47 Q897 | 90 0.90 71.37 Q898 | 15 0.15 71.52 Q899 | 55 0.55 72.07 Q909 | 30 0.30 72.37 Q913 | 200 2.00 74.37 Q916 | 1 0.01 74.38 Q917 | 104 1.04 75.42 Q927 | 2 0.02 75.44 Q928 | 9 0.09 75.53 Q929 | 9 0.09 75.62 Q933 | 5 0.05 75.67 Q935 | 12 0.12 75.79 Q938 | 1 0.01 75.80 Q969 | 1 0.01 75.81 Q970 | 1 0.01 75.82 Q984 | 1 0.01 75.83 Q992 | 1 0.01 75.84 Q998 | 8 0.08 75.92 Q999 | 25 0.25 76.17 R048 | 2 0.02 76.19 R068 | 1 0.01 76.20 R090 | 4 0.04 76.24 R092 | 4 0.04 76.28 R198 | 1 0.01 76.29 R298 | 2 0.02 76.31 R568 | 4 0.04 76.35 R579 | 4 0.04 76.39 R628 | 3 0.03 76.42 R688 | 2 0.02 76.44 R943 | 1 0.01 76.45 R95 | 945 9.45 85.90 R98 | 2 0.02 85.92 R99 | 498 4.98 90.90 V031 | 1 0.01 90.91 V090 | 2 0.02 90.93 V436 | 1 0.01 90.94 V446 | 1 0.01 90.95 V476 | 2 0.02 90.97 V486 | 2 0.02 90.99 V489 | 1 0.01 91.00 V495 | 3 0.03 91.03 V499 | 1 0.01 91.04 V636 | 1 0.01 91.05 V804 | 1 0.01 91.06 V866 | 1 0.01 91.07 V877 | 8 0.08 91.15 V887 | 1 0.01 91.16 V892 | 20 0.20 91.36 W04 | 1 0.01 91.37 W06 | 1 0.01 91.38 W10 | 1 0.01 91.39 W18 | 3 0.03 91.42 W20 | 3 0.03 91.45 W23 | 8 0.08 91.53 W33 | 3 0.03 91.56 W51 | 1 0.01 91.57 W54 | 1 0.01 91.58 W55 | 1 0.01 91.59 W65 | 24 0.24 91.83 W67 | 2 0.02 91.85 W69 | 3 0.03 91.88 W73 | 2 0.02 91.90 W74 | 5 0.05 91.95 W75 | 382 3.82 95.77 W76 | 8 0.08 95.85 W78 | 9 0.09 95.94 W79 | 4 0.04 95.98 W80 | 18 0.18 96.16 W81 | 1 0.01 96.17 W83 | 10 0.10 96.27 W84 | 92 0.92 97.19 W92 | 1 0.01 97.20 X00 | 14 0.14 97.34 X30 | 3 0.03 97.37 X37 | 1 0.01 97.38 X41 | 1 0.01 97.39 X42 | 1 0.01 97.40 X44 | 1 0.01 97.41 X47 | 2 0.02 97.43 X599 | 3 0.03 97.46 X85 | 12 0.12 97.58 X91 | 19 0.19 97.77 X92 | 11 0.11 97.88 X95 | 5 0.05 97.93 X97 | 1 0.01 97.94 X98 | 3 0.03 97.97 X99 | 2 0.02 97.99 Y00 | 1 0.01 98.00 Y05 | 1 0.01 98.01 Y069 | 4 0.04 98.05 Y078 | 1 0.01 98.06 Y079 | 22 0.22 98.28 Y08 | 5 0.05 98.33 Y09 | 102 1.02 99.35 Y11 | 2 0.02 99.37 Y12 | 6 0.06 99.43 Y14 | 3 0.03 99.46 Y17 | 1 0.01 99.47 Y20 | 23 0.23 99.70 Y21 | 3 0.03 99.73 Y33 | 3 0.03 99.76 Y34 | 18 0.18 99.94 Y830 | 2 0.02 99.96 Y831 | 1 0.01 99.97 Y839 | 1 0.01 99.98 Y848 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Jul 2017