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Table 4 Known groups validity – PaO2/FiO2 ratio

From: Psychometric properties of Patient Reported Outcome Measures (PROMs) in patients diagnosed with Acute Respiratory Distress Syndrome (ARDS)

  Moderate ARDS mean (SD) Moderate ARDS n Severe ARDS mean (SD) Severe ARDS n Difference P value Confidence interval Cohen’s D
EQ-5D-3 L (Utility) 0.60 (0.39) 141 0.58 (0.31) 82 0.02 0.749 −0.08 0.16 0.04
SF-6D (Utility) 0.66 (0.16) 138 0.65 (0.14) 80 0.01 0.586 −0.03 0.06 0.08
SF-12 PCS 37.60 (12.49) 131 35.66 (12.02) 78 1.93 0.274 −1.54 5.41 0.16
SF-12 MCS 46.04 (12.80) 131 44.41 (14.12) 78 1.64 0.391 −2.11 5.39 0.12
SGRQ Symptoms Score 31.73 (27.31) 140 37.15 (28.72) 81 −5.42 0.164 −13.08 2.24 −0.19
SGRQ Activity Score 43.59 (31.69) 120 50.62 (31.71) 73 −7.03 0.137 −16.31 2.25 −0.22
SGRQ Impact Score 20.57 (22.14) 120 24.65 (22.80) 74 −4.08 0.219 −10.61 2.44 −0.18
SGRQ Total Score 37.14 (28.72) 108 35.18 (23.98) 67 −5.03 0.182 −12.44 2.38 −0.21