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Table 2 Subgroup analysis of lifetime prevalence of any substance use among students in Ethiopia

From: Prevalence of lifetime substances use among students in Ethiopia: a systematic review and meta-analysis

Subgroup

Number of studies (n)

Prevalence (95% CI)

Between group heterogeneity statistics

Cochrane Q

p value

I2 (%)

Region

 Tigrai

2

63.3 (60.7, 65.9)

   

 Oromia

1

62.4 (59.4, 65.4)

   

 Somale

1

56.7 (52.6, 60.7)

149.5

0.000

99.0

 Amhara

5

48.0 (33.7, 62.4)

   

 SNNP

2

42.2 (39.5, 44.9)

   

Sample size

 < 1000

9

54.1 (43.7, 64.4)

3.2

0.075

99.0

 1000+

2

44.4 (42.3, 46.6)

   

Female proportion

 10–20

3

46.0 (27.2, 65.4)

   

 20–30

3

49.2 (34.8, 63.8)

2.1

0.556

98.8

 30–40

2

56.7 (54.0, 59.4)

   

 40–50

3

57.7 (44.9, 70.0)

   

Mean age

 < 20

2

64.0 (61.1, 66.9)

5.6

0.018

98.8

 20+

9

50 (38.7, 61.3)

   

Publication year

 2000–2010

1

28.4 (25.7, 31.1)

   

 2011–2014

7

60.4 (50.7, 69.7)

42.5

0.000

98.8

 2015–2017

3

42.1 (28.5, 56.3)

   

Study year

 2000–2010

1

28.4 (25.7, 31.1)

   

 2011–2014

7

60.4 (50.7, 69.7)

2.2

0.137

98.8

 2015–2017

3

42.1 (28.5, 56.3)

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