| happiness | Robust Coef. | Std. Err. | Z | >z | [95% Conf. | Interval] |
| Competition | 0.595 | 0.225 | 2.64 | 0.008 | 0.154 | 1.037 |
| Female | −0.177 | 0.060 | −2.94 | 0.003 | −0.295 | −0.059 |
| Age | 0.002 | 0.0006 | 0.64 | 0.000 | 0.001 | 0.003 |
| Education | 0.045 | 0.014 | 0.18 | 0.001 | 0.017 | 0.072 |
| Employment | 0.018 | 0.005 | 0.63 | 0.000 | 0.008 | 0.028 |
| Social class | 0.044 | 0.019 | 0.31 | 0.021 | 0.006 | 0.081 |
| Income | −0.057 | 0.006 | 8.92 | 0.000 | −0.070 | −0.044 |
| Country | 0.001 | 0.000 | 0.25 | 0.000 | 0.001 | 0.002 |
| _cons | −0.479 | 0.803 | 0.60 | 0.551 | −2.053 | 1.094 |