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Table 9 Results of the comparison between the NIG and IG in March 2020

From: Improvement in prescriptions while maintaining overall health outcomes: a prospective observational study conducted in Japanese facilities for older people

  NIG IG t-value p-value
Number of people 275 141   
 EQ-5D-5L scores
mean ± SD
0.59 ± 0.30 0.69 ± 0.74 −1.72 0.087
 BI scores
mean ± SD
54.2 ± 33.6 50.0 ± 34.7 1.05 0.29
 MMSE scores
mean ± SD
14.0 ± 9.7 13.6 ± 9.4 0.30 0.77
 DBD scores
mean ± SD
17.3 ± 13.2 175. ± 12.5 −0.14 0.89
 VI scores
mean ± SD
7.2 ± 2.9 6.7 ± 3.1 1.24 0.22
 Medication costs
JPY/day, mean ± SD
546.2 ± 536.8 495.0 ± 483.5 0.94 0.35
 Number of medications
mean ± SD
7.9 ± 3.4 6.0 ± 3.2 5.27 p < 0.001*
  1. * Statistically significant. NIG (not improvement group), those who were prescribed both in March 2019 and March 2020 were classified into this group
  2. IG (improvement group), participants who were prescribed and administered medications cautiously in March 2019 and not prescribed in March 2020 were classified into this group