Table A1.
Percent of Individuals with no symptoms, one or more symptoms, and diagnosis by zygosity and sex
| MZF | MZM | DZF | DZM | DZO | ||
|---|---|---|---|---|---|---|
|
| ||||||
| 345 pairs | 290 pairs | 211 pairs | 219 pairs | 261 pairs | ||
| MDD | No symptoms | 571 (.83) | 554(.96) | 366(.87) | 405(.92) | 456(.87) |
| ≥ 1 symptom | 58(.08) | 15(.03) | 36(.09) | 23(.05) | 34(.07) | |
| Diagnosis | 35(.09) | 11(.02) | 20(.05) | 10(.02) | 32(.06) | |
| GAD | No symptoms | 576(.83) | 538(.93) | 363(.86) | 403(.92) | 441(.84) |
| ≥ 1 symptom | 87(.13) | 37(.06) | 48(.11) | 33(.08) | 64(.12) | |
| Diagnosis | 27(.04) | 5(.01) | 11(.03) | 2(.00) | 17(.03) | |
| SAD | No symptoms | 427(.62) | 478(.82) | 288(.68) | 355(.81) | 354(.68) |
| ≥ 1 symptom | 239(.35) | 95(.16) | 118(.28) | 75(.17) | 155(.30) | |
| Diagnosis | 24(.03) | 7(.01) | 16(.04) | 8(.02) | 13(.02) | |
| ADD | No symptoms | 410(.59) | 340(.59) | 268(.64) | 236(.53) | 297(.57) |
| ≥ 1 symptom | 265(.38) | 221(.38) | 142(.34) | 181(.41) | 201(.39) | |
| Diagnosis | 15(.02) | 19(.03) | 12(.03) | 21(.05) | 24(.05) | |
| ODD | No symptoms | 564(.82) | 496(.86) | 359(.85) | 368(.84) | 431(.83) |
| ≥ 1 symptom | 108(.16) | 72(.12) | 50(.12) | 57(.13) | 67(.13) | |
| Diagnosis | 18(.03) | 12(.02) | 13(.03) | 13(.03) | 24(.05) | |
| CD | No symptoms | 412(.60) | 284(.49) | 285(.68) | 207(.47) | 252(.48) |
| ≥ 1 symptom | 248(.36) | 221(.38) | 119(.28) | 185(.42) | 221(.42) | |
| Diagnosis | 30(.04) | 75(.13) | 18(.04) | 46(.11) | 49(.09) | |
Note. MZF= female monozygotic twin pairs; MZM= malemonozygotic twin pairs; DZF= female dizygotic twin pairs; DZM= male dizygotic twin pairs; DZO= opposite sex dizygotic twin pairs; MDD = major depressive disorder; GAD = generalized anxiety disorder; SAD = separation anxiety disorder; ADHD = attention-deficit/hyperactivity disorder; ODD = oppositional defiant disorder; CD = conduct disorder.