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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