Trial Outcomes & Findings for Evaluate the Utility of Serum Hepcidin Levels to Predict Response to Oral or IV Iron (NCT NCT01950247)

Evaluate the Utility of Serum Hepcidin Levels to Predict Response to Oral or IV Iron

The MAF scale has 16 items that measure the Global Fatigue Index (GFI), a composite score of Items 1 through 15. Items 1 through 14 were measured on a scale of 1 to 10, with 1 = not at all and 10 = a great deal. Items 15 and 16 had categorical responses: degree of agreement from 0 to 4, with 0=no days and 4=every day. Then, a Global Fatigue Index (GFI) is calculated by summing specific items and averaging others. The final GFI score ranges from 1 (no fatigue) to 50 (severe fatigue). The resulting score is given as the mean value.

The WPAI consisted of six questions: 1 = currently employed; 2 = hours missed due to health problems; 3 = hours missed other reasons; 4 = hours actually worked; 5 = degree health affected productivity while working using a scale of 0 to 10, with 0 = PROBLEM had no effect on my work and 10 = PROBLEM completely prevented me from working; 6 = degree health affected productivity in regular unpaid activities using a scale of 0 to 10, with 0 = PROBLEM had no effect on my daily activities and 10 = PROBLEM completely prevented me from doing my daily activities. It yields 4 sub-scores: work time missed (absenteeism), impairment while working (presenteeism or reduced on-the-job effectiveness), overall work impairment (work productivity loss or absenteeism plus presenteeism) and activity impairment (daily activity impairment). These sub-scores are transformed to impairment percentages (range from 0 to 100), with higher numbers indicating greater impairment and less productivity.

Participants rated 14 items with 4 domains. Scores for item 1 to 3, 9 to 11 and 14 ranged from 1=extremely dissatisfied to 7=extremely satisfied. Items 5 to 8, 12, 13 ranged from 1=extremely dissatisfied to 5=not at all dissatisfied. Item 4 was scored as: 0=No, 1=Yes. Effectiveness measured as (\[{sum of item 1 to 3} - 3\]/18)\*100; if 1 question (Q) was missing: (\[{sum of item 1 to 3} -2\]/12)\*100. Side-effect measured as if item 4=No, score=100; if not then (\[{sum of item 5 to 8} -4\]/16)\*100; if 1 Q was missing: (\[{sum of item 5 to 8} -3\]/12)\*100. Convenience measured as (\[{sum of item 9 to 11} -3\]/18)\*100; if 1 Q was missing: (\[{sum of item 9 to 11} - 2\]/12)\*100. Global satisfaction as (\[{sum of item 12 to 14} -3\]/14)\*100; if item 12 or 13 was missing: (\[{sum of item 12 to 14} -2\]/10)\*100; if item 14 was missing: (\[{sum of item 12 and 13} -2\]/8)\*100. All domains had scale of 0 (no satisfaction) to 100 (best level of satisfaction), higher score equals greater satisfaction

The SF-12 is a multipurpose short form to measure health status. There are 10 domains: Physical Composite Index (score range from 0-100); Physical Functioning Index (score range from 0-100); Role Limitation Physical Index (score range 0-100); Pain Index Score (score range from 0-100); General Health Index (score range from 0-100); Mental Health Composite Index (score range from 1-100); Vitality Index (score range from 0-100); Social Functioning Index (score rang 0-100); Role Limitation Emotional Index (score range 0-100); and SF-12 Mental Health Index (score range from 0-100), the higher the score means a better outcome. The overall scale and sub-scales were calculated with the standard SF-12 formulas.