Table 1.
Attention-deficit hyperactivity disorder (ADHD) prevalence by sociodemographic variables
| Variable | People with ADHD, n | General population, n | Lifetime prevalence (per 100 people) | 95% CI |
|---|---|---|---|---|
| Sex | ||||
| Male | 10 803 | 104 856 | 10.30 | 10.11 to 10.50 |
| Female | 3959 | 102 688 | 3.86 | 3.74 to 3.98 |
| Region | ||||
| Urban | 10 182 | 125 309 | 5.57 | 5.41 to 5.73 |
| Rural | 4580 | 82 235 | 8.13 | 7.97 to 8.28 |
| Age group, years | ||||
| 18 to 19 | 4733 | 51 962 | 9.11 | 8.85 to 9.37 |
| 20 to 21 | 2638 | 32 640 | 8.08 | 7.78 to 8.40 |
| 22 to 23 | 2380 | 32 003 | 7.44 | 7.14 to 7.74 |
| 24 to 25 | 1959 | 31 028 | 6.31 | 6.04 to 6.60 |
| 26 to 27 | 1693 | 30 331 | 5.58 | 5.32 to 5.85 |
| 28 to 29 | 1359 | 29 580 | 4.59 | 4.36 to 4.85 |
| SES | ||||
| NF | 109 | 715 | 15.24 | 12.64 to 18.39 |
| Q1 | 2881 | 43 653 | 6.60 | 6.36 to 6.85 |
| Q2 | 2910 | 41 285 | 7.05 | 6.80 to 7.31 |
| Q3 | 2842 | 39 991 | 7.11 | 6.85 to 7.37 |
| Q4 | 2931 | 40 472 | 7.24 | 6.98 to 7.51 |
| Q5 | 3089 | 41 428 | 7.46 | 7.20 to 7.72 |
| SES by region | ||||
| NF | 109 | 715 | 15.24 | 12.64 to 18.39 |
| R1 | 785 | 17 498 | 4.49 | 4.18 to 4.81 |
| R2 | 832 | 16 184 | 5.14 | 4.80 to 5.50 |
| R3 | 902 | 16 017 | 5.63 | 5.28 to 6.01 |
| R4 | 944 | 15 597 | 6.05 | 5.68 to 6.45 |
| R5 | 1101 | 16 747 | 6.57 | 6.20 to 6.97 |
| U1 | 2096 | 26 155 | 8.01 | 7.68 to 8.36 |
| U2 | 2078 | 25 101 | 8.28 | 7.93 to 8.64 |
| U3 | 1940 | 23 974 | 8.09 | 7.74 to 8.46 |
| U4 | 1987 | 24 875 | 7.99 | 7.64 to 8.35 |
| U5 | 1988 | 24 681 | 8.05 | 7.71 to 8.42 |
| Psychostimulant treatment | ||||
| Ever received | 6403 | 207 544 | 3.09 | 3.01 to 3.16 |
| During childhood | 5202 | 207 544 | 2.51 | 2.44 to 2.57 |
| During adulthood | 1490 | 207 544 | 0.72 | 0.68 to 0.76 |
| During childhood only | 4913 | 207 544 | 2.37 | 2.30 to 2.43 |
| During adulthood only | 1201 | 207 544 | 0.58 | 0.55 to 0.61 |
NF = not found (people for whom income quintiles could not be determined from Census data because they were registered under the Manitoba Public Trustee, or residents of various care facilities, areas reporting no income in the Census, new neighborhoods, or from dissemination areas with populations of less than 250 [owing to suppression]); Q1 to Q5 = income quintiles, with Q1 being the lowest and Q5 the highest; R1 to R5 = rural income quintiles, with R1 being the lowest and R5 the highest; SES = socioeconomic status; U1 to U5 = urban income quintiles, with U1 being the lowest and U5 the highest