From: Sex differences in romantic love: an evolutionary perspective
 |  |  |  |  |  |  |  |  | 95% CI | |
---|---|---|---|---|---|---|---|---|---|---|
 | R2 | Adjusted R2 | Δ Adjusted R2 | b | SE | β | t | p | Lower | Upper |
Step 1 | 0.035*** | 0.030*** | Â | Â | Â | Â | Â | Â | Â | Â |
Age |  |  |  | 0.049 | 0.027 | 0.062 | 1.77 | 0.076 | −0.01 | 0.10 |
Sex ratio |  |  |  | 0.003 | 0.017 | 0.007 | 0.19 | 0.849 | −0.03 | 0.04 |
Gender inequality |  |  |  | 1.902 | 0.440 | 0.154 | 4.32 | < 0.001 | 1.04 | 2.77 |
Months in love |  |  |  | −0.025 | 0.009 | −0.100 | −2.87 | 0.004 | −0.04 | −0.01 |
Step 2 | 0.047*** | 0.041*** | 0.010** | Â | Â | Â | Â | Â | Â | Â |
Age | Â | Â | Â | 0.053 | 0.027 | 0.067 | 1.95 | 0.052 | 0.00 | 0.11 |
Sex ratio |  |  |  | 0.001 | 0.017 | 0.002 | 0.05 | 0.964 | −0.03 | 0.03 |
Gender inequality |  |  |  | 1.887 | 0.437 | 0.153 | 4.32 | < 0.001 | 1.03 | 2.75 |
Months in love |  |  |  | −0.023 | 0.009 | −0.094 | −2.71 | 0.007 | −0.04 | −0.04 |
Biological sex (male) | Â | Â | Â | 0.318 | 0.102 | 0.108 | 3.13 | 0.002 | 0.12 | 0.12 |