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Table 2 Standard psychometric measures: descriptive statistics and correlation with MGI

From: The feasibility and acceptability of using the Mother-Generated Index (MGI) as a Patient Reported Outcome Measure in a randomised controlled trial of maternity care

       Correlation with MGI
   Mean SD Range IQR r p
MGI Baseline 7.6 1.51 0–10 1.80 n/a  
  6 weeks PN 7.6 1.48 0–10 1.65 n/a  
EQ-5D-3L Baseline .92 0.12 0.13–1 0.20 .225 p < .01
  6 weeks PN .91 0.15 −.594–1 0.15 .226 p < .01
EPDS Baseline 6.4 4.53 0–26 6.00 −.350 p < .01
  6 weeks PN 4.9 4.41 0–22 6.00 −.395 p < .01
SWLS Baseline 28.1 4.88 9–35 5.00 .464 p < .01
  6 weeks PN 29.3 4.57 10–35 6.00 .334 p < .01
STAI Baseline 10.2 3.52 6–22 5.00 −.255 p < .01
  6 weeks PN 9.3 3.42 0–23 5.00 −.306 p < .01
  1. Key
  2. IQR Interquartile Range, EQ-5D-3L Euroqol 5D [3L version], EPDS Edinburgh Postnatal Depression Scale, SWLS Satisfaction With Life Scale, STAI State Trait Anxiety Inventory, 6 weeks PN 6 weeks postnatal