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Table 2 Correlates of the likelihood of engaging in healthy pregnancy preparation behavior

From: Factors influencing adolescents’ healthy pregnancy preparation behavior: a cross-sectional gender comparison applying the health belief model

Variables Boys (n = 416)
Model 1 Model 2 Model 3 Model 4
B β B β B β B β
(Constant) 13.78   8.61   9.52   8.20  
Age (years) − 0.01 − 0.00 − 0.01 − 0.01 − 0.03 − 0.02 − 0.03 − 0.39
Religion 0.11 0.03 0.09 0.02 0.06 0.01 0.06 0.38
Academic achievement 0.08 0.03 − 0.01 − 0.00 0.02 0.01 0.03 0.28
Living condition − 0.53 − 0.07 − 0.50 − 0.06 − 0.51 − 0.06 − 0.46 − 1.44
Economic status 0.19 0.05 0.15 0.04 0.15 0.04 0.13 0.83
Alcohol consumption experience − 0.33 − 0.08 − 0.22 − 0.05 − 0.26 − 0.06 − 0.42 − 2.30*
Smoking experience − 1.29 − 0.27*** − 1.06 − 0.22*** − 1.01 − 0.21*** − 0.83 − 3.78***
HPV vaccine − 0.09 − 0.01 − 0.06 − 0.01 − 0.03 − 0.00 0.04 0.10
Sexual education experience 0.33 0.06 0.30 0.06 0.34 0.07 0.11 0.51
Sexual experience 0.24 0.03 0.32 0.04 0.22 0.03 − 0.13 − 0.43
Importance of HPPB    0.03 0.14* 0.02 0.11 0.02 1.51
Confidence in HPPB    0.03 0.21** 0.03 0.22** 0.02 2.07*
Women’s responsibility      − 0.55 − 0.20** − 0.27 − 1.80
Men’s responsibility      0.44 0.14* 0.23 1.41
Perceived susceptibility        − 0.09 − 2.85**
Perceived severity        0.12 2.44*
Perceived benefits        0.24 4.66***
Perceived barriers        − 0.16 − 3.88***
R2 (Δ R2) 0.11 0.21(0.10) 0.23(0.02) 0.40(0.17)
Adj R2 0.09 0.19 0.20 0.37
F(P) 4.84*** 8.83*** 8.54*** 14.41***
Variables Girls (n = 274)
Model 1 Model 2 Model 3 Model 4
B β B β B β B β
(Constant) 14.94   11.15   11.36   10.52  
Age (years) − 0.19 − 0.08 − 0.24 − 0.10 − 0.26 − 0.11 − 0.27 − 0.12
Religion 0.12 0.03 0.02 0.00 0.02 0.00 − 0.15 − 0.04
Academic achievement 0.28 0.10 0.20 0.07 0.22 0.07 0.20 0.07
Living condition 0.53 0.07 0.37 0.05 0.36 0.05 0.31 0.04
Economic status 0.26 0.06 0.24 0.05 0.22 0.05 0.31 0.07
Alcohol consumption experience − 0.21 − 0.05 − 0.19 − 0.04 − 0.18 − 0.04 − 0.32 − 0.07
Smoking experience − 1.66 − 0.26*** − 1.58 − 0.25*** − 1.56 − 0.25*** − 1.57 − 0.25***
HPV vaccine 0.27 0.04 0.27 0.04 0.25 0.04 0.22 0.04
Sexual education experience 0.55 0.11 0.55 0.11 0.56 0.11 0.37 0.07
Sexual experience 0.25 0.03 0.49 0.07 0.47 0.06 0.25 0.03
Importance of HPPB    0.05 0.22** 0.05 0.22** 0.04 0.19**
Confidence in HPPB    0.00 0.02 0.00 0.02 0.00 − 0.00
Women’s role and/or responsibility      − 0.21 − 0.08 − 0.16 − 0.06
Men’s role and/or responsibility      0.24 0.09 0.13 0.05
Perceived susceptibility        0.02 0.02
Perceived severity        0.24 0.20**
Perceived benefits        0.06 0.05
Perceived barriers        − 0.27 − 0.23***
R2 (Δ R2) 0.13 0.18 (0.05) 0.19 (0.01) 0.31 (0.12)
Adj R2 0.10 0.15 0.14 0.26
F(P) 4.05*** 4.90*** 4.27*** 6.26***
  1. HPV human papillomavirus; HBM health belief model
  2. *p < 0.05, **p < 0.01, ***p < 0.001