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. Author manuscript; available in PMC: 2024 Feb 1.
Published in final edited form as: Ann Surg. 2023 Jan 10;277(2):e294–e304. doi: 10.1097/SLA.0000000000005027

Table 5.

Mortality Odds Ratios Adjusted for Sex, RAI, OSS, Case Status, and PASC with Sex*PASC Interaction Term or PASC Subgroup Analyses

30-day 90-day 180-day
Adjusted OR
(95% CI)
P value Adjusted OR
(95% CI)
P value Adjusted OR
(95% CI)
P value
Sex*PASC Interaction Term Analysis (n=82,269)
Male (Ref = Female) 0.98 (0.85–1.14) .82 1.00 (0.89–1.13) .99 1.00 (0.90–1.11) .997
RAI (Ref = Normal 21–29)
 Robust (≤20) 0.20 (0.17–0.24) <.001 0.19 (0.17–0.22) <.001 0.19 (0.17–0.22) <.001
 Frail (30–39) 2.39 (2.08–2.75) <.001 2.80 (2.50–3.15) <.001 3.05 (2.75–3.37) <.001
 Very frail (≥40) 4.02 (3.17–5.10) <.001 4.88 (3.96–6.01) <.001 5.52 (4.55–6.69) <.001
Expanded OSS (Ref = OSS1)
 OSS2 1.90 (0.99–3.64) .053 1.55 (0.97–2.47) .07 1.72 (1.14–2.60) .009
 OSS3 3.53 (1.87–6.69) <.001 2.64 (1.67–4.18) <.001 2.67 (1.78–4.00) <.001
 OSS4 5.48 (2.88–10.43) <.001 4.18 (2.63–6.65) <.001 4.27 (2.83–6.42) <.001
 OSS5 15.11 (7.65–29.81) <.001 9.57 (5.79–15.83) <.001 11.16 (7.20–17.31) <.001
Urgent/Emergent
(Ref = elective)
5.56 (4.78–6.48) <.001 4.80 (4.27–5.41) <.001 3.90 (3.54–4.30) <.001
PASC 6.31 (5.19–7.67) <.001 5.42 (4.56–6.45) <.001 4.80 (4.08–5.65) <.001
Males*PASC 0.78 (0.61–1.01) .055 0.76 (0.60–0.95) .02 0.73 (0.59–0.91) .004
Model C-Statistic 0.91 0.90 0.88
Subgroup Analyses
PASC subgroup (n=3,492)
Male (Ref = Female) 0.80 (0.65–0.98) .03 0.80 (0.66–0.96) .02 0.78 (0.65–0.94) .007
RAI (Ref = Normal 21–29)
 Robust (≤20) 0.28 (0.21–0.36) <.001 0.27 (0.21–0.34) <.001 0.27 (0.22–0.35) <.001
 Frail (30–39) 1.87 (1.47–2.38) <.001 2.29 (1.83–2.87) <.001 2.32 (1.87–2.89) <.001
 Very frail (≥40) 2.69 (1.88–3.85) <.001 3.06 (2.16–4.33) <.001 3.38 (2.39–4.77) <.001
Expanded OSS (Ref = OSS1)
 OSS2 2.89 (0.88–9.44) .08 2.38 (0.93–6.09) .07 2.98 (1.17–7.58) .02
 OSS3 5.90 (1.84–18.94) .003 4.51 (1.80–11.34) .001 5.36 (2.14–13.45) <.001
 OSS4 7.85 (2.44–25.26) .001 6.73 (2.67–16.95) <.001 7.76 (3.08–19.53) <.001
 OSS5 7.70 (1.75–33.84) .007 11.11 (3.38–36.57) <.001 12.62 (3.89–40.99) <.001
Urgent/Emergent
(Ref = elective)
4.02 (2.48–6.50) <.001 3.21 (2.18–4.74) <.001 2.64 (1.87–3.73) <.001
Model C-Statistic 0.76 0.77 0.77
No PASC subgroup (n=78,777)
Male (Ref = Female) 0.95 (0.82–1.11) .53 0.98 (0.87–1.10) .72 0.98 (0.89–1.09) .69
RAI (Ref = Normal 21–29)
 Robust (≤20) 0.17 (0.14–0.22) <.001 0.17 (0.14–0.20) <.001 0.17 (0.15–0.20) <.001
 Frail (30–39) 2.67 (2.24–3.17) <.001 2.99 (2.61–3.43) <.001 3.26 (2.90–3.66) <.001
 Very frail (≥40) 5.37 (3.99–7.24) <.001 6.17 (4.83–7.88) <.001 6.71 (5.38–8.37) <.001
Expanded OSS (Ref = OSS1)
 OSS2 1.54 (0.72–3.33) .27 1.31 (0.77–2.24) .32 1.46 (0.93–2.30) .10
 OSS3 2.70 (1.27–5.74) .01 2.14 (1.27–3.60) .004 2.15 (1.40–3.35) .001
 OSS4 4.52 (2.10–9.70) <.001 3.39 (1.99–5.77) <.001 3.47 (2.21–5.46) <.001
 OSS5 13.22 (6.01–29.10) <.001 8.01 (4.57–14.06) <.001 9.39 (5.83–15.11) <.001
Urgent/Emergent
(Ref = elective)
5.61 (4.77–6.59) <.001 4.86 (4.29–5.51) <.001 3.95 (3.56–4.37) <.001
Model C-Statistic 0.88 0.87 0.86

Abbreviations: OR, Odds Ratio; OSS, Operative Stress Score; PASC, Preoperative Acute Serious Conditions; RAI, Risk Analysis Index; Ref, reference

Logistic regression analyses