FIG 1.

(A) QLQ-C30 summary scores according to SES indicator at baseline, Year 1, and Year 2. (B) Changes in QLQ-C30 summary scores relative to baseline and according to SES indicator. (C) Inequalities in QLQ-C30 summary scores for each of the studied time points and SES indicators. Models in (B) and (C) are adjusted for age, comorbidities, breast cancer stage at diagnosis, type of lymph node management, surgery type, type of systemic treatment, and use of radiotherapy. Reported P values are for interaction by time points (P.int). MLS, mean least square differences; QLQ–C30, QoL Core 30 questionnaire; SES, socioeconomic status; SII, slope index of inequality.