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Table 1 Characteristics of included studies

From: Epidemiology of attention-deficit/hyperactivity disorder (ADHD) in children and adolescents in Africa: a systematic review and meta-analysis

Author (year) (reference number)CountrySample sizeSettingTool usedPrevalence of ADHDNOS quality score
Wamulugwa et al. (2017) [13]Uganda332Hospital basedDBRSOverall 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]Sudan1000Schools and community basedSNAP-IV-COverall 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]Nigeria1112Schools and community basedVARTRSOverall 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]Nigeria1473Community basedDBRSOverall 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]Nigeria1384Community basedDBRSOverall 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]Congo1187Community basedDBRSOverall 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]Kenya240InstitutionDSM-IVOverall 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]Ethiopia1477Community basedDICA-ROverall 1.49% (n/N = 22/1477)8
Awadalla et al. (2016) [29]Egypt873School basedADHD Rating ScaleOverall 12.60 (n/N = 110/873)7
Farahat et al. (2014) [30]Egypt1362Community basedDSM-IVOverall 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]Egypt925Community basedCASSOverall 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]Egypt100Institution basedDBRSOverall 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
  1. 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