We thank Rao et al. for their interest in our paper [1]. We collected the demographics and data on various questionnaires before delivery and allowed patients to recall and fill in any missing data (if any) given the dynamic and progressive nature of labour. Hence, we apologise for any confusion in the manuscript, whereby the phrase "assessed within 24 hours after delivery" was, in fact, referring to the period up to which data were collected as potential association factors. No significant differences in pain and psychological vulnerabilities (depressive symptoms; pain catastrophising; central sensitisation; fear-