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Table 3 Lost productivity for previous one month

From: Excess cost of non-remission among outpatients with major depressive disorder

Lost productive time for previous one month New MDD Remitted MDD Non-remitted MDD p Statistics Testa)
(N = 128) (N = 100) (N = 109)
Actual work (days) 24.20 ± 4.73(25) 23.95 ± 5.41(25) 24.12 ± 5.97(25) N.S.   
Absent days due to health problems 3.42 ± 6.74(0) 2.83 ± 7.19(0) 4.90 ± 8.69(0) N.S.   
Partial missing days due to health problems 2.16 ± 4.32(0) 1.69 ± 4.59(0) 2.61 ± 5.70(0) N.S.   
Other person rating job performance 6.73 ± 2.16(7) 7.28 ± 1.69(7) 6.49 ± 2.33(7) N.S.   
Self-rated job performance 5.38 ± 2.37(5) 6.93 ± 2.11(7) 5.47 ± 2.49(5) <0.0001b) χ2 = 29.80  
Self-rated job performance compared other person, n (%)       
 Extremely better 7(5.5) 11(11.0) 8(7.3) 0.0096c) χ2 = 26.33  
 Quite better 15(11.7) 15(15.0) 10(9.2)    
 Slightly better 10(7.8) 13(13.0) 4(3.7)    
 Neither 30(23.4) 30(30.0) 25(22.9)    
 Slightly worse 23(18.0) 14(14.0) 23(21.1)    
 Quite worse 25(19.5) 10(10.0) 13(11.9)    
 Extremely worse 18(14.1) 7(7.0) 26(23.9)    
LPT due to Absenteeism e) (hour) 29.59 ± 51.29(2) 23.15 ± 53.14(0) 38.93 ± 65.69(0) 0.0365 b) χ2 = 6.62 a = b = c
LPT due to Presenteeism f) (hour) 69.76 ± 45.71(66) 46.19 ± 31.44(45) 63.27 ± 47.27(64) 0.0004 b) χ2 = 15.49 a = c, a > b, c > b
Monthly Cost of Absenteeismg) ($) 262.29 ± 438.70(0) 220.25 ± 470.86(0) 449.34 ± 876.63(0) 0.0445b) χ2 = 6.22 a = b = c
Monthly Cost of Presenteeismh) ($) 733.43 ± 630.39(559) 517.74 ± 483.64(401) 618.09 ± 563.58(528) 0.0196b) χ2 = 7.86 c = b < a
Difference between New and Remitted MDD for LPT due to Absenteeism (hour) - 6.44 ± 52.10 - 0.0244d) Z = −2.25 -
Difference between New and Remitted MDD for LPT due to Presenteeism (hour) - 23.57 ± 40.13 - <0.0001d) Z = −4.00 -
Difference between Non-remitted and Remitted MDD for LPT due to Absenteeism (hour) - - 15.77 ± 60.02 0.0205d) Z = −2.32 -
Difference between Non-remitted and Remitted MDD for LPT due to Presenteeism (hour) - - 17.08 ± 40.48 0.0140d) Z = −2.46 -
Difference of non-remitted MDD from remitted MDD for Monthly Cost of Absenteeism ($) - - 229.11 ± 712.10 0.0205d) Z = −2.32 -
Difference of non-remitted MDD from remitted MDD for Monthly Cost of Presenteeism ($) - - 100.35 ± 526.92 0.2347d) Z = −1.19 -
Total cost ($) 1105.55 ± 678.80(990) 846.47 ± 698.00(629) 1202.36 ± 885.49(951) 0.0005 b) χ2 = 15.26 a = c, a > b, c > b
  1. a)Mann Whitney Wilcoxon test for multiple comparison (Bonferroni's correction method).
  2. b)Difference between groups (Kruskal-Wallis test).
  3. c)Difference between groups (Chi-square test).
  4. d)Difference between groups (Mann Whitney Wilcoxon test).
  5. e)LPT due to Absenteeism = Absent days due to health problems × 8(hours) + Partial missing days due to health problems × 4(hours).
  6. f)LPT due to Presenteeism = [{Actual work (days) × 8(hours)-Absent days due to health problems × 8(hours)-Partial missing days due to health problems × 4(hours)} × {(10-Self-rated job performance)/10}].
  7. g)Monthly cost of Absenteeism = LPT of Absenteeism × hourly wage.
  8. h)Monthly cost of Presenteeism = LPT of Presenteeism × hourly wage.
  9. Note: Denominator of percentage is the number of subjects in the column.
  10. Categorical variables are displayed as the number of subjects (percentage of subjects).
  11. Continuous variables are displayed as mean ± standard deviation (median).