Table 2 Wagstaff normalized concentration index (WCI) (95% confidence interval, standard error and P-value) for unintended pregnancy in Iran
From: Socioeconomic inequality of unintended pregnancy in the Iranian population: a decomposition approach
Unintended pregnancy | WCI value | Std. Err. | 95% Conf. interval for CI | P-value |
−0.108 | 0.020 | − 0.119 ~ − 0.054 | < 0.001 |