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. 2026 Feb 2;16(2):e099915. doi: 10.1136/bmjopen-2025-099915

Table 2. Factors associated with adverse birth outcomes among adolescents.

Variable Adverse birth outcome χ2 (p value) cOR (95% CI), p value aOR (95% CI), p value
Present, n (%) Absent, n (%)
Year of birth 2.47 (0.116)
 2021 85 (41.7) 119 (58.3) Ref
 2022 57 (33.7) 112 (66.3) 1.38 (0.90 to 2.10), 0.140
Subdistrict 13.78 (0.008)
 Zanlerigu 26 (49.1) 27 (50.9) Ref Ref
 Pelungu 27 (26.5) 75 (73.5) 2.68 (1.33 to 5.36), 0.006 2.95 (1.44 to 6.05), 0.003
 Sakote 30 (50.8) 29 (49.2) 0.93 (0.44 to 1.96), 0.850 0.95 (0.45 to 2.02), 0.902
 Kongon-Pintanga 42 (40.0) 63 (60.0) 1.44 (0.74 to 2.81), 0.279 1.44 (0.74 to 2.82), 0.289
 Nangodi-Nyoboko 17 (31.5) 37 (68.5) 2.10 (0.95 to 4.61), 0.065 1.91 (0.86 to 4.24), 0.112
Age 4.92 (0.027)
 <16 13 (44.8) 16 (55.2) Ref Ref
 16–19 129 (37.5) 215 (62.5) 0.29 (0.09 to 0.92), 0.036 0.26 (0.08 to 0.89), 0.032
Height (cm) 5.26 (0.154)
 <150 4 (50.0) 4 (50.0) Ref
 150–159 68 (37.0) 116 (63.0) 1.71 (0.41 to 7.04), 0.460
 160–169 63 (42.3) 86 (57.7) 1.40 (0.34 to 5.83), 0.641
 170+ 7 (21.9) 25 (78.1) 3.57 (0.71 to 18.04), 0.123
Educational level 1.40 (0.705)
 None 10 (40.0) 15 (60.0) Ref
 Primary 33 (42.3) 45 (57.7) 0.77 (0.30 to 1.95), 0.577
 JHS 84 (37.7) 139 (62.3) 0.93 (0.39 to 2.20), 0.870
 SHS 15 (31.9) 32 (68.1) 1.20 (0.43 to 3.33), 0.726
Main occupation 2.427 (0.788)
 Housewife 44 (34.4) 84 (65.6) Ref
 Student 54 (39.4) 83 (60.6) 0.93 (0.53 to 1.63), 0.790
 Skilled worker 34 (42.5) 46 (57.5) 0.87 (0.29 to 2.64), 0.802
 Farmer 6 (42.9) 8 (57.1) 1.30 (0.31 to 5.43), 0.718
 Trader 3 (33.3) 6 (66.7) 1.24 (0.75 to 2.05), 0.396
 Unemployed 1 (20.0) 4 (80.0) 2.60 (0.28 to 23.91), 0.398
Number of pregnancies 1.13 (0.568)
 1 121 (39.0) 189 (61.0) Ref
 2 20 (34.5) 38 (65.5) 1.20 (0.67 to 2.16), 0.543
 3 1 (20.0) 4 (80.0) 2.53 (0.27 to 22.87), 0.410
Number of children 2.26 (0.324)
 0 125 (39.7) 190 (60.3) Ref
 1 16 (29.1) 39 (70.9) 1.58 (0.85 to 2.95), 0.150
 2 1 (33.3) 2 (66.7) 1.30 (0.12 to 14.47), 0.832
Gestational age at ANC 1.91 (0.385)
 First trimester 43 (33.9) 84 (66.1) Ref
 Second trimester 81 (39.3) 125 (60.7) 0.79 (0.50 to 1.25), 0.317
 Third trimester 18 (45.0) 22 (55.0) 0.69 (0.34 to 1.43), 0.322
NHIS status 0.12 (0.728)
 Yes and active 141 (38.0) 230 (62.0) Ref
 No/inactive 1 (50.0) 1 (50.0) 0.61 (0.04 to 9.77), 0.724
HIV/AIDS status 0.12 (0.728)
 Negative 141 (38.0) 230 (62.0) Ref
 Positive 1 (50.0) 1 (50.0) 0.61 (0.04 to 9.77), 0.724
Sickling status 5.30 (0.021)
 Negative 137 (37.3) 230 (62.7) Ref
 Positive 5 (83.3) 1 (16.7) 0.12 (0.01 to 1.03), 0.053
Number of ANC visits 5.93 (0.015)
 Less than eight visits 81 (42.0) 112 (58.0) Ref Ref
 Eight or more visits 61 (33.9) 119 (66.1) 0.27 (0.09 to 0.83), 0.022 0.30 (0.10 to 0.96), 0.042
Anaemia status at first ANC 1.71 (0.635)
 No 80 (37.4) 134 (62.6) Ref
 Mild 53 (38.4) 85 (61.6) 0.99 (0.64 to 1.54), 0.955
 Moderate 8 (40.0) 12 (60.0) 0.90 (0.35 to 2.28), 0.817
 Severe 1 (100.0) 0 (0.0)
Anaemia status at delivery 8.79 (0.032)
 No 75 (95.6) 128 (63.1) Ref Ref
 Mild 60 (38.5) 96 (61.5) 1.17 (0.44 to 3.09), 0.759 1.07 (0.38 to 3.06), 0.892
 Moderate 6 (50.0) 6 (50.0) 1.96 (0.23 to 16.88), 0.540 2.09 (0.24 to 18.58), 0.507
 Severe 1 (50.0) 1 (50.0) 21.56 (1.25 to 373.11), 0.035 17.66 (0.98 to 318.78), 0.052
Sex of newborn 0.29 (0.590)
 Female 66 (36.7) 114 (63.3) Ref
 Male 76 (39.4) 117 (60.6) 0.87 (0.57 to 1.32), 0.516

ANC, antenatal care; aOR, adjusted OR; cOR, crude OR; JHS, junior high school; NHIS, National Health Insurance Scheme; SHS, senior high school.