Correction: Exploring concordance of patient-reported information on patients like me and medical claims data at the patient level (Journal of Medical Internet Research (2016) 18: 5 (e110))

The authors of,exploring concordance of patient-reported information on patientslikeme and medical claims data at the patient level (j med internet res 2016;18(5):e110) would like to make changes in the fourth paragraph under the heading of principal findings in the discussion section of the paper. the text should read,a larger percentage of diagnosis-unmatched patients reported having primary progressive ms,than those who did have a matching diagnosis (15% vs 4%,respectively). instead of a larger percentage of diagnosis-unmatched patients reported having primary progressive ms than those who did have a matching diagnosis (15% vs 3%,respectively). the second correction is in table 1. there were missing cells that lead to the absence of a key ms subgroup,relapsing-remitting ms,with knock-on consequences for other cells in that table. 1. the value of age in years (sd) was changed in the column consenting patients with claims match from 47.4 (10.63) to 57.4 (10.63). 2. the value of plm patients with ms as primary or secondary condition (%) was changed in the column consenting patients with claims match from 391 (69.2) to 392 (69.4). 3. the row relapsing-remitting was added under ms subtype. the values,2,429 (61.1),2,165 (60.8),250 (63.8),and 14 (66.7) were added for columns patients invited (n=5,362), patients who did not consent (n=4,759), consenting patients with claims match (n=565), and consenting patients with no claims match (n=36), respectively. 4. the values for the row primary progressive under ms subtype were changed from 2682 (67.5),2392 (65.5),275 (70.3),and 15 (71.4) to 253 (6.4),227 (6.4),25 (6.4),and 1 (4.76) in each column,respectively. 5. the values for the row unreported under the ms subtype were changed from 676 (18.5) and 28 (7.2) to 586 (16.5) and 29 (7.4) under columns patients who did not consent (n=4,759) and consenting patients with claims match (n=565), respectively. 6. the percentages have also been adjusted in the reported ms dmt use in pml category from 3118 (58.2),2751 (57.8),351 (62.1),and 16 (44.4) to 3,118 (78.4),2,751 (77.2),351 (90.0),and 16 (76.2) in each column,respectively. the corrected table 1 is as below: (table presented). both these alterations have been made in the online version of the paper on the jmir website on october 27,2016 together with publishing this correction notice. because these were made after submission to pubmed and other full-text repositories,the correction notice has been submitted to pubmed,and the original paper has been resubmitted to pubmed central. the corrected metadata have also been resubmitted to crossref. © gabriel s eichler,elisenda cochin,jian han,sylvia hu,timothy e vaughan,paul wicks,charles barr,jenny devenport.