Table 1

Conversion table from PHQ-9 to EQ-5D total and change scores

Total scoresChange scores
PHQ-9EQ-5D pretreatmentEQ-5D post-treatmentPHQ-9EQ-5D
01.00−250.900
11.001.00−240.850
21.001.00−230.850
31.000.91−220.742
41.000.89−210.708
51.000.88−200.683
60.910.85−190.675
70.890.84−180.643
80.880.81−170.632
90.850.80−160.609
100.840.77−150.575
110.830.75−140.532
120.800.72−130.454
130.770.72−120.401
140.770.69−110.319
150.730.68−100.238
160.720.65−90.196
170.690.62−80.143
180.690.55−70.094
190.650.38−60.047
200.570.36−50.031
210.410.29−40.016
220.340.24−30.002
230.270.17−2−0.013
240.230.12−1−0.026
250.170.020−0.038
260.101−0.047
270.042−0.070
3−0.105
4−0.130
5−0.150
6−0.221
7−0.309
8−0.379
9−0.421
10−0.466
11−0.506
12−0.541
13−0.573
14−0.635
15−0.750
16−0.950
17−1.200
  • EQ-5D, Euro-Qol Five Dimensions; PHQ-9, Patient Health Questionnaire-9.