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. 2022 Jun 1;18(6):1657–1665. doi: 10.5664/jcsm.9956

Table 5.

CGI-I scale.

CGI-I All Patients (n = 917) Subgroup 1 Subgroup 2 Subgroup 3 Subgroup 4 Subgroup 5 P*
AHI < 15 events/h (n = 21) 15 ≥ AHI < 30 events/h (n = 349) 30 ≥ AHI ≤ 50 events/h (n = 399) 50 < AHI ≤ 65 events/h (n = 109) AHI > 65 events/h (n = 39)
Very much improved 41.4% 33.3% 45.0% 40.1% 43.1% 23.1% .58
Much improved 36.1% 47.6% 35.0% 37.3% 33.0% 35.9%
Minimally improved 13.1% 9.5% 12.0% 12.8% 13.8% 25.6%
No change 6.2% 4.8% 5.7% 5.5% 8.3% 12.8%
Minimally worse 2.0% 4.8% 1.4% 2.8% 0.9% 0%
Much worse 1.1% 0.0% 0.86% 1.3% 0.9% 2.6%
Very much worse 0.11% 0.0% 0.0% 0.25% 0.0% 0.0%

*P value (chi-square test) compares subgroups at final visit; improved vs not improved (including no change). AHI = apnea-hypopnea index, CBI-I = Clinical Global Impression–Improvement.