The evidence supports the WPAI as having test-retest reliability ( reproducibility ) over time ; convergent validity , as indicated by moderate correlations with measures of quality of life and moderate-to-strong correlations with measures of disease activity ; known-groups validity , as indicated by differences in WPAI scores between patients with active and inactive disease ; ability ( sensitivity ) to detect change , as indicated by substantial improvement in scores for patients who achieve remission , accompanied by substantial worsening of scores for patients who relapse ; and , responsiveness to treatment , with improvements in scores following treatments that reduce disease activity .
Patients with ulcerative colitis , a type of inflammatory bowel disease , report negative impacts of disease symptoms on work-related outcomes , including absenteeism and presenteeism .
As a way to better underst and the impact of this disease and its treatment on work-related outcomes , the current review examines the use of the Work Productivity and Activity Impairment Question naire ( WPAI ) , a patient-reported outcomes measure of absenteeism , presenteeism , and impairment in other activities , in studies of patients with ulcerative colitis .
This review assesses the measurement properties of the WPAI in this patient population : its reliability , construct validity , ability to detect change , and responsiveness to effective treatments .
Response and remission are associated with improved quality of life, employment and disability status, hours worked, and productivity of patients with ulcerative colitis
Background : Impairment of health‐related quality of life , employment , and productivity has been documented in patients with moderate to severe ulcerative colitis . Methods : Using prospect ively collected data from the Active Ulcerative Colitis Trials 1 and 2 , we examined the impact of clinical response or remission , as defined using the Mayo score , on health‐related quality of life , employment , disability , productivity , and hours worked per week . These analyses were based on observed data and included all 728 patients , regardless of their r and omized treatment group ( i.e. ,  placebo and infliximab patients were grouped for analysis ) . Changes in Inflammatory Bowel Disease Question naire ( IBDQ ) and Medical Outcomes Study 36‐Item Short Form ( SF‐36 ) scores among nonresponders , responders , and patients in remission were compared . In addition , changes in employment , disability status , productivity , and hours worked per week of patients in clinical remission and patients not in clinical remission were compared . Results : Ulcerative colitis patients in clinical response or remission had significantly improved IBDQ and SF‐36 scores at week 30 compared with those of nonresponders ( P < 0.001 ) . Among those not employed at baseline , including those receiving disability compensation , greater percentages of patients in remission at week 30 were employed ( 20.6 % ) and not receiving disability compensation ( 58.8 % ) than were those not in remission ( 8.3 % and 20.0 % , respectively ; P < 0.05 for both comparisons ) . At week 30 , improvements from baseline in productivity and both actual and fully productive hours worked per week were greater for patients in remission compared with those not in remission ( P < 0.05 for all three comparisons ) . Conclusions : These results confirm the validity of response and remission as defined using the Mayo score
The evidence supports the WPAI as having test-retest reliability ( reproducibility ) over time ; convergent validity , as indicated by moderate correlations with measures of quality of life and moderate-to-strong correlations with measures of disease activity ; known-groups validity , as indicated by differences in WPAI scores between patients with active and inactive disease ; ability ( sensitivity ) to detect change , as indicated by substantial improvement in scores for patients who achieve remission , accompanied by substantial worsening of scores for patients who relapse ; and , responsiveness to treatment , with improvements in scores following treatments that reduce disease activity .
Patients with ulcerative colitis , a type of inflammatory bowel disease , report negative impacts of disease symptoms on work-related outcomes , including absenteeism and presenteeism .
As a way to better underst and the impact of this disease and its treatment on work-related outcomes , the current review examines the use of the Work Productivity and Activity Impairment Question naire ( WPAI ) , a patient-reported outcomes measure of absenteeism , presenteeism , and impairment in other activities , in studies of patients with ulcerative colitis .
This review assesses the measurement properties of the WPAI in this patient population : its reliability , construct validity , ability to detect change , and responsiveness to effective treatments .