Frequencies for mdcdesc variable in drg2mdcxw1987 dataset :

        Major Diagnostic Category (MDC) |
                            Description |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
0: PRINCIPAL DX CAN NOT BE ASSIGNED T.. |          3        0.63        0.63
10: ENDOCRINE, NUTRITIONAL & METABOLI.. |         17        3.58        4.21
11: DISEASES & DISORDERS OF THE KIDNE.. |         32        6.74       10.95
12: DISEASES & DISORDERS OF THE MALE .. |         19        4.00       14.95
13: DISEASES & DISORDERS OF THE FEMAL.. |         17        3.58       18.53
14: PREGNANCY, CHILDBIRTH & THE PUERP.. |         15        3.16       21.68
15: NEWBRNS & OTHER NEONATES WITH CON.. |          7        1.47       23.16
16: DISEASES & DISORDERS OF BLOOD & B.. |          8        1.68       24.84
       17: MYELOPROLIFERATIVE DISORDERS |         16        3.37       28.21
    18: INFECTIOUS & PARASITIC DISEASES |          9        1.89       30.11
        19: MENTAL DISEASES & DISORDERS |          9        1.89       32.00
1: DISEASES & DISORDERS OF THE NERVOU.. |         35        7.37       39.37
20: ALCOHOL/DRUG USE & ALCOHOL/DRUG I.. |          6        1.26       40.63
21: INJURIES, POISONINGS & TOXIC EFFE.. |         17        3.58       44.21
                              22: BURNS |          6        1.26       45.47
23: FACTORS INFLUENCING HLTH STAT & O.. |          7        1.47       46.95
     2: DISEASES & DISORDERS OF THE EYE |         13        2.74       49.68
3: DISEASES & DISORDERS OF THE EAR, N.. |         26        5.47       55.16
4: DISEASES & DISORDERS OF THE RESPIR.. |         30        6.32       61.47
5: DISEASES & DISORDERS OF THE CIRCUL.. |         43        9.05       70.53
6: DISEASES & DISORDERS OF THE DIGEST.. |         45        9.47       80.00
7: DISEASES & DISORDERS OF THE HEPATO.. |         18        3.79       83.79
8: DISEASES & DISORDERS OF THE MUSCUL.. |         49       10.32       94.11
9: DISEASES & DISORDERS OF THE SKIN, .. |         28        5.89      100.00
----------------------------------------+-----------------------------------
                                  Total |        475      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016