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Table 2 Marriage, births and sexual debut among adolescent girls between 2000 and 2015 by urban–rural residence, education and household wealth tertile, based on national surveys 1990–2018 from 37 countries, sub-Saharan Africa (in parentheses 95% confidence intervals)

From: Inequalities in early marriage, childbearing and sexual debut among adolescents in sub-Saharan Africa

  Before age 18 (20 for childbearing) Before age 15
  2000 2015 AARC p 2000 2015 AARC p
Marriage
 Overall 34.8 [25.5, 44.2] 28.0 [18.6, 37.4] − 1.4 0.32 9.4 [5.9, 12.9] 6.7 [3.1, 10.2] − 2.3 0.29
 Rural 41.2 [28.7, 53.8] 35.0 [22.5, 47.6] − 1.1 0.50 11.5 [6.7, 16.3] 8.7 [3.8, 13.5] − 1.9 0.43
 Urban 24.9 [17.5, 32.3] 18.1 [10.6, 25.5] − 2.1 0.20 5.9 [3.5, 8.2] 3.8 [1.4, 6.2] − 2.9 0.24
 None or primary 43.6 [34.8, 52.4] 43.4 [34.5, 52.3] 0.0 0.98 12.0 [7.9, 16.1] 10.9 [6.7, 15] − 0.6 0.73
 Secondary +  14.7 [9.1, 20.3] 15.0 [9.4, 20.7] 0.2 0.93 2.3 [0.9, 3.7] 2.5 [1.1, 4] 0.6 0.85
 Poorest (33.3%) 44.8 [32.6, 57.0] 39.8 [27.6, 52.1] − 0.8 0.59 12.7 [7.7, 17.7] 10.2 [5.2, 15.2] − 1.5 0.49
 Middle (33.3%) 37.9 [27.3, 48.6] 29.9 [19.2, 40.6] − 1.6 0.30 10.2 [6.4, 14] 6.9 [3.1, 10.8] − 2.6 0.23
 Richest (33.3%) 24.0 [17.8, 30.1] 15.7 [9.4, 22.0] − 2.8 0.06 5.7 [3.6, 7.7] 3.4 [1.3, 5.5] − 3.4 0.13
Childbearing
 Overall 50.9 [47, 54.8] 46.5 [42.5, 50.5] − 0.6 0.12 3.8 [2.5, 5.0] 2.9 [1.7, 4.2] − 1.6 0.38
 Rural 58.0 [51.4, 64.7] 56.0 [49.3, 62.7] − 0.2 0.70 4.7 [2.8, 6.5] 3.7 [1.8, 5.6] − 1.5 0.50
 Urban 40.7 [35.4, 46] 34.1 [28.8, 39.5] − 1.2  < 0.001 2.6 [1.8, 3.3] 2.0 [1.3, 2.8] − 1.6 0.31
 None or primary 60.8 [56.4, 65.2] 63.6 [59.1, 68.2] 0.3 0.39 5.0 [3.5, 6.4] 4.8 [3.3, 6.3] − 0.2 0.90
 Secondary +  30.2 [23.2, 37.3] 31.2 [24.0, 38.4] 0.2 < 0.01 1.0 [0.6, 1.5] 1.1 [0.6, 1.6] 0.5 0.81
 Poorest (33.3%) 61.5 [56.7, 66.3] 61.9 [56.9, 66.8] 0.0 0.92 5.4 [3.5, 7.2] 4.6 [2.8, 6.5] − 1.0 0.59
 Middle (33.3%) 54.7 [50.3, 59.2] 49.9 [45.3, 54.5] − 0.6 < 0.001 4.0 [2.6, 5.3] 3.0 [1.6, 4.4] − 1.8 0.35
 Richest (33.3%) 37.8 [33.7, 41.9] 29.4 [25.1, 33.6] − 1.7 0.38 2.2 [1.5, 2.9] 1.5 [0.8, 2.2] − 2.5 0.19
Sexual debut
 Overall 60.8 [51.7, 69.8] 54.3 [45.3, 63.4] − 0.7 0.33 16.7 [11.8, 21.7] 12.3 [7.3, 17.3] − 2.0 0.22
 Rural 65.1 [54.3, 75.9] 60.6 [49.7, 71.4] − 0.5 0.57 19.9 [13.1, 26.6] 15.4 [8.6, 22.2] − 1.7 0.36
 Urban 54.7 [45.7, 63.7] 46.5 [37.4, 55.6] − 1.1 < 0.001 12.8 [8.6, 17] 8.9 [4.6, 13.1] − 2.4 0.20
 None or primary 68.2 [60.3, 76.2] 67.5 [59.4, 75.5] − 0.1 0.91 21.0 [15.7, 26.3] 18.8 [13.4, 24.1] − 0.7 0.57
 Secondary +  46.1 [35.6, 56.5] 44.1 [33.5, 54.6] − 0.3 < 0.001 7.9 [4.7, 11.1] 7.4 [4.2, 10.6] − 0.5 0.83
 Poorest (33.3%) 67.7 [58.7, 76.6] 64.9 [55.8, 73.9] − 0.3 0.68 21.4 [15, 27.8] 17.5 [11, 23.9] − 1.4 0.40
 Middle (33.3%) 63.3 [53.4, 73.3] 57.3 [47.2, 67.3] − 0.7 < 0.01 17.6 [12.4, 22.8] 12.9 [7.7, 18.1] − 2.1 0.21
 Richest (33.3%) 51.8 [43.0, 60.5] 42.4 [33.6, 51.2] − 1.3 0.37 11.8 [8.1, 15.6] 7.5 [3.7, 11.3] − 3.1 0.11
  1. AARC average annual rate of change (in percentage), and the minus sign indicates a declining trend; p-values reflect statistical significance of the absolute difference in proportion between the year 2000 and 2015. Secondary + refers to completed education level reported as secondary or higher