Fig. 3From: Deep and superficial endometriotic disease: the response to radical laparoscopic excision in the treatment of chronic pelvic painScatter plot of second principal component scores (PCII) against first principal component scores ( PCI) from principal component analysis of individual questionnaire scores for pre-operative questionnaires. ○ post-operative questionnaires ●. The numbers identify each subject’s reference number, and dotted lines link scores for pre- and post-operative scores for subjects who are discussed in the textBack to article page