Productivity Loss and Associated Costs Among Employed Patients Receiving Disease-Modifying Treatment for Multiple...

The aim of this study was to examine the indirect burden of employed multiple sclerosis (MS) patients initiating disease-modifying therapies (DMTs) in the US.

DMT-treated MS patients (DMT users) and direct-matched controls without MS (1:3) were captured using the IBM MarketScan Commercial Claims and Encounters Database and the Health and Productivity Management Database between 1 January 2009 and 1 January 2017. DMT users were also stratified by route of administration. Time loss and costs from absenteeism, short-term disability, and long-term disability were assessed for DMT users and matched controls.

A total of 3022 DMT users were matched to 9066 controls. Compared with injectable DMT users, oral DMT users took twice as long to initiate therapy but had numerically lower absenteeism costs and significantly lower long-term disability costs in the first year after DMT initiation. The mean (standard deviation) indirect costs of absenteeism, short-term disability, and long-term disability were US$6474 (US$6779), US$2368 (US$5777), and US$280 (US$2578), respectively, for DMT users and US$4468 (US$3814), US$328 (US$1950), and US$36 (US$938), respectively, for controls in the first year (all p < 0.001).

Employed DMT users in the US incurred incremental increased indirect burden ($2007 in absenteeism, $2040 in short-term disability, and $244 in long-term disability) compared with matched controls. Despite evidence of delays in treatment initiation, oral DMT users had evidence of reduced work loss compared with injectable users, suggesting that open access to all treatment options may reduce the indirect burden of MS. Additional research into the impact of route of administration on the burden of long-term disability among MS patients is needed.