Contribution of indicator variables in discriminating between latent clusters and partitioning of covariates between the clusters.

*Wald statistic values are provided to assess the statistical significance of each nominal parameter. A non-significant associated P value means that the indicator does not discriminate between the clusters in a statistically significant way.**G-Kθ (Goodman Kruskal tau b) is a more general coefficient of association between two nominal variables. In this case it represents the strength of association between the respective indicator and our latent variable “antenatal IAI exposure”. The closer to 1 the G-Kθ value, the higher the association and the contribution of the respective indicator in discriminating between latent clusters of the final model.