****************************************************************** *STATA syntax code for the computation of index* *values with the Sri Lankan value set (TTO)* ******************************************************************; gen disut_mo = . replace disut_mo = 0 if missing(disut_mo) & mobility == 1 replace disut_mo = 0.166 if missing(disut_mo) & mobility == 2 replace disut_mo = 1.071 if missing(disut_mo) & mobility == 3 gen disut_sc = . replace disut_sc = 0 if missing(disut_sc) & selfcare == 1 replace disut_sc = 0.119 if missing(disut_sc) & selfcare == 2 replace disut_sc = 0.337 if missing(disut_sc) & selfcare == 3 gen disut_ua = . replace disut_ua = 0 if missing(disut_ua) & activity == 1 replace disut_ua = 0.071 if missing(disut_ua) & activity == 2 replace disut_ua = -0.419 if missing(disut_ua) & activity == 3 gen disut_pd = . replace disut_pd = 0 if missing(disut_pd) & pain == 1 replace disut_pd = 0.057 if missing(disut_pd) & pain == 2 replace disut_pd = 0.3 if missing(disut_pd) & pain == 3 gen disut_ad = . replace disut_ad = 0 if missing(disut_ad) & anxiety == 1 replace disut_ad = 0.044 if missing(disut_ad) & anxiety == 2 replace disut_ad = 0.194 if missing(disut_ad) & anxiety == 3 gen disut_mo2ua2 = 0 replace disut_mo2ua2 = 0.053 if mobility == 2 & activity ==2 gen disut_mo3sc3 = 0 replace disut_mo3sc3 = -0.182 if mobility == 3 & selfcare ==3 gen disut_mo3ua3 = 0 replace disut_mo3ua3 = -0.208 if mobility == 3 & activity ==3 gen disut_mo3pd3 = 0 replace disut_mo3pd3 = -0.181 if mobility == 3 & pain ==3 gen disut_mo3ad3 = 0 replace disut_mo3ad3 = -0.113 if mobility == 3 & anxiety ==3 gen disut_sc3ua2 = 0 replace disut_sc3ua2 = 0.048 if selfcare == 3 & activity == 2 gen disut_ua3pd3 = 0 replace disut_ua3pd3 = 0.078 if activity == 3 & pain ==3 gen disut_total = disut_mo + disut_sc + disut_ua + disut_pd + disut_ad + disut_mo2ua2 + disut_mo3sc3 + disut_mo3ua3 + disut_mo3pd3 + disut_mo3ad3 + disut_sc3ua2 + disut_ua3pd3 gen EQ_index = . replace EQ_index = 1 - 0.152 - disut_total replace EQ_index = 1 if mobility == 1 & selfcare == 1 & activity == 1 & pain == 1 & anxiety == 1 replace EQ_index = round(EQ_index, .001)