TABLE 2

Estimates of Prevalence of Chronic Disabling Fatigue Comparing Fatigue Lasting 3 Months and 6 Months With and Without Allowing for Missing Data (50 Imputations)

Analyses Based on Children With Complete Data (2860 boys, 2797 girls)Analyses Based on Multiple Imputation by Using FAI Score (5165 boys, 4836 girls)Analyses Based on Multiple Imputation by Using Individual FAI Factors (5165 boys, 4836 girls)
Duration at least 3 mo
 Overall2.07 (1.70, 2.44)2.21 (1.82, 2.60)2.44 (1.91, 2.97)
 Boy2.06 (1.54, 2.58)2.20 (1.70, 2.71)2.47 (1.64, 3.30)
 Girl2.07 (1.55, 2.60)2.22 (1.65, 2.78)2.40 (1.81, 2.99)
Duration at least 6 mo
 Overall0.94 (0.69, 1.19)1.00 (0.76, 1.25)1.30 (0.84, 1.76)
 Boy0.94 (0.59, 1.30)1.04 (0.70, 1.38)1.40 (0.63, 2.18)
 Girl0.93 (0.57, 1.29)0.97 (0.62, 1.31)1.19 (0.75, 1.63)
  • Missing imputation was calculated by using composite FAI scores as well as by using the individual item for each score. Figures given are as percentage of population with fatigue (95% CI).