Table 1.
Main ICD-9 diagnostic class | A | B | C | D | ||||
---|---|---|---|---|---|---|---|---|
Females | Males | Females | Males | Females | Males | Females | Males | |
Infectious and parasitic diseases | 319,191 | 296,266 | 374 | 1123 | 94,994 | 52,240 | 209 | 334 |
Neoplasms | 250,405 | 253,349 | 373 | 1208 | 163,780 | 95,157 | 210 | 249 |
Endocrine, nutritional, and metabolic diseases, and immunity disorders | 247,105 | 235,070 | 292 | 1116 | 167,080 | 113,436 | 291 | 341 |
Diseases of the blood and blood-forming organs | 341,750 | 317,074 | 453 | 1309 | 72,435 | 31,432 | 130 | 148 |
Mental disorders | 306,559 | 291,110 | 366 | 1104 | 107,626 | 57,396 | 217 | 353 |
Diseases of the nervous system and sense organs | 119,376 | 121,085 | 74 | 169 | 294,809 | 227,421 | 509 | 1288 |
Diseases of the circulatory system | 238,083 | 225,425 | 344 | 1183 | 176,102 | 123,081 | 239 | 274 |
Diseases of the respiratory system | 57,965 | 66,822 | 35 | 89 | 356,220 | 281,684 | 548 | 1368 |
Diseases of the digestive system | 199,818 | 185,619 | 183 | 630 | 214,367 | 162,887 | 400 | 827 |
Diseases of the genitourinary system | 89,960 | 228,306 | 128 | 894 | 324,225 | 120,200 | 455 | 563 |
Complications of pregnancy, childbirth, and the puerperiumb | 303,519 | 343,418 | 486 | 1425 | 110,666 | 5088 | 97 | 32 |
Diseases of the skin and subcutaneous tissue | 108,172 | 118,487 | 74 | 310 | 305,888 | 230,019 | 509 | 1147 |
Diseases of the musculoskeletal system and connective tissue | 109,204 | 113,812 | 158 | 649 | 304,981 | 234,694 | 425 | 808 |
Congenital anomalies | 389,222 | 330,859 | 493 | 1224 | 24,963 | 17,647 | 90 | 233 |
Certain conditions originating in the perinatal period | 385,130 | 336,072 | 522 | 1208 | 29,055 | 12,434 | 61 | 249 |
Symptoms, signs, and ill-defined conditions | 34,564 | 47,690 | 19 | 79 | 379,621 | 300,816 | 564 | 1378 |
Injury and poisoning | 89,306 | 69,540 | 68 | 258 | 324,879 | 278,966 | 515 | 1199 |
Odds ratio formula: Odds ratio = (AD/BC), where A = patients with neither autism spectrum disorder (ASD) nor that ICD-9 disorder; B = those with ASD but not the ICD-9 disorder; C = those without ASD but with the ICD-9 disorder; and D = those with both disorders.
Complications of pregnancy and childbirth (ICD-9 Codes 630–679) refer in males to newborns or fetuses (n = 32), whereas in females it refers to both newborns or fetuses and adolescent females of childbearing age (n = 97).
ICD-9 = International Classification of Diseases, Ninth Revision.