Table 1 Characteristics of included studies

Wamulugwa et al. (2017) [13]

Uganda

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

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

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

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

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

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

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

Community based

DICA-R

Overall 1.49% (n/N = 22/1477)

8

Awadalla et al. (2016) [29]

Egypt

School based

ADHD Rating Scale

Overall 12.60 (n/N = 110/873)

7

Farahat et al. (2014) [30]

Egypt

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

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

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