Table 1.
Characteristics of included studies
| Author (year) (reference number) | Country | Sample size | Setting | Tool used | Prevalence of ADHD | NOS quality score |
|---|---|---|---|---|---|---|
| Wamulugwa et al. (2017) [13] | Uganda | 332 | Hospital based | DBRS |
Overall 11.75% (n/N = 39/332) Men 14.9% (n/N = 28/188) Women 7.6 (n/N = 11/144) |
8 |
| Osman et al. (2015) [25] | Sudan | 1000 | Schools and community based | SNAP-IV-C |
Overall 9.4% (n/N = 94/1000) Inattentive type 3.5% (n/N = 35/1000) Impulsive type 6.9% (n/N = 69/1000) Combined type %1.0 (n/N = 10/1000) Inattentive type in men 4.9% (n/N = 25/511) Inattentive type in women 1.8% (n/N = 9/489) Impulsive type in men 9.6% (n/N = 48/511) Impulsive type in women 2.3% (n/N = 21/489) |
9 |
| Adewuya et al. (2007) [22] | Nigeria | 1112 | Schools and community based | VARTRS |
Overall 8.7% (n/N = 97/1112) Men 11% (n/N = 75/682) Women 5.1 (n/N = 22/430) Inattentive type 4.9% (n/N = 55/1112) Impulsive type 1.2% (n/N = 13/1112) Combined type % 2.6% (n/N = 29/1112) Inattentive type in men 6.2% (n/N = 42/682) Inattentive type in women 3% (n/N = 13/430) Impulsive type in men 1.6% (n/N = 11/682) Impulsive type in women 0.5% (n/N = 2/430) Combined type in men 3.2% (n/N = 22/682) Combined type in women 1.6% (n/N = 7/430) |
8 |
| Ambuabunos et al. (2011) [4] | Nigeria | 1473 | Community based | DBRS |
Overall 7.6% (n/N = 112/1473) Men 9.4% (n/N = 74/784) Women 5.5 (n/N = 38/689) Inattentive type 3.6% (n/N = 53/1473) Impulsive type 1.6% (n/N = 24/1473) Combined type % 2.4% (n/N = 35/1473) Inattentive type in men 4.5% (n/N = 35/784) Inattentive type in women 2.6% (n/N = 18/689) Impulsive type in men 1.9% (n/N = 15/784) Impulsive type in women 1.3% (n/N = 9/689) Combined type in men 3.1% (n/N = 24/784) Combined type in women 1.5% (n/N = 11/689) |
9 |
| Ofovwe et al. (2009) [5] | Nigeria | 1384 | Community based | DBRS |
Overall 8% (n/N = 111/1384) Men 9.5% (n/N = 69/732) Women 6.4% (n/N = 42/652) Inattentive type 2.7% (n/N = 38/1384) Impulsive type 3% (n/N = 41/1384) Combined type % 2.5% (n/N = 35/1384) Inattentive type in men 3% (n/N = 22/732) Inattentive type in women 2.4% (n/N = 16/652) Impulsive type in men 3.2% (n/N = 23/732) Impulsive type in women 2.7% (n/N = 18/652) Combined type in men 3.6% (n/N = 26/732) Combined type in women 1.4% (n/N = 9/652) |
9 |
| Kashala et al. (2005) [26] | Congo | 1187 | Community based | DBRS |
Overall 6% (n/N = 70/1187) Men 7.1% (n/N = 38/534) Women 4.9% (n/N = 32/653) |
8 |
| Wamithi et al. (2015) [27] | Kenya | 240 | Institution | DSM-IV |
Overall 6.3 (n/N = 15/240) Inattentive type 1.3% (n/N = 3/240) Impulsive type 2.9% (n/N = 7/240) Combined type % 2.1% (n/N = 5/240) |
8 |
| Ashenafi et al. (2001) [33] | Ethiopia | 1477 | Community based | DICA-R | Overall 1.49% (n/N = 22/1477) | 8 |
| Awadalla et al. (2016) [29] | Egypt | 873 | School based | ADHD Rating Scale | Overall 12.60 (n/N = 110/873) | 7 |
| Farahat et al. (2014) [30] | Egypt | 1362 | Community based | DSM-IV |
Overall 6.9% (n/N = 94/1362) Men 10.9% (n/N = 73/667) Women 3% (n/N = 21/695) Inattentive type 2.6% (n/N = 36/1362) Impulsive type 1.3% (n/N = 18/1362) Combined type % 2.9% (n/N = 40/1362) Inattentive type in men 3.4% (n/N = 23/667) Inattentive type in women 1.8% (n/N = 13/695) Impulsive type in men 2.2% (n/N = 15/667) Impulsive type in women 0.4% (n/N = 3/695) Combined type in men 5.2% (n/N = 35/667) Combined type in women 0.7% (n/N = 5/695) |
9 |
| Bishry et al. (2014) [13] | Egypt | 925 | Community based | CASS |
Overall 9.4% (n/N = 87/925) Men 13.8% (n/N = 58/421) Women 5.8% (n/N = 29/504) Inattentive type 1.2% (n/N = 11/925) Impulsive type 4.4% (n/N = 41/925) Combined type % 2.5% (n/N = 23/925) Inattentive type in men 2.3% (n/N = 10/421) Inattentive type in women 0.2% (n/N = 1/504) Impulsive type in men 8.8% (n/N = 37/421) Impulsive type in women 1.4% (n/N = 7/504) Combined type in men 2.9% (n/N = 12/421) Combined type in women 2.1% (n/N = 11/504) |
9 |
| Yahia et al. (2014) [32] | Egypt | 100 | Institution based | DBRS |
Overall 8% (n/N = 8/100) Inattentive type 4% (n/N = 4/100) Impulsive type 6% (n/N = 6/100) Combined type % 2% (n/N = 2/100) |
5 |
DBRS Disruptive Behavior Rating Scale, VARTRS The Vanderbilt ADHD Teacher Rating Scale, SNAP-IV-C Swanson, Nolan, and Pelham rating scale 4th revision, CASS Conners-Wells Adolescent Self-Report Scale, DICA-R Diagnostic interview for Child and Adolescents-Revised, VARTRS Vanderbilt ADHD Teacher Rating Scale, DSM-IV Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition