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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: J Am Geriatr Soc. 2018 Dec 8;67(2):357–362. doi: 10.1111/jgs.15697

Table 1:

Sensitivity Testing for Robustness to Death of Participants during Follow-up: Associations of Pre-Frailty with Post-Discharge Count of Disability among Older Survivors of Critical Illness

Count Outcome: Post-Discharge Functional Disability (0 – 13)a
Imputation Approach for Follow-up Outcomes Missing From Decedents Sample Size (person-months) Indicator of Pre-Frailty (1 ≤ Fried ≤ 2) referent to Fried = 0
Rate Ratio (95% CI) p-valueb
Complete Case 1433 from 215 persons 1.28 (1.01 – 1.63) 0.042
MAR 1596 from 215 persons 1.31 (1.04 – 1.64) 0.020
MNAR (all missing set to 0) 1596 from 215 persons 1.36 (1.05 – 1.76) 0.018
MNAR (all missing set to 7) 1596 from 215 persons 1.27 (1.01 – 1.59) 0.041
MNAR (all missing set to 13) 1596 from 215 persons 1.21 (0.94 – 1.56) 0.134
a

sum of disability in four basic activities of daily living, five instrumental activities of daily living, and four mobility measures

b

multivariable negative binomial regression with GEE with autoregressive correlation structure and adjustment for age, sex, race, education, body mass index, depressive symptoms, number of chronic conditions, cognitive status, pre-ICU count of disability, ICU length of stay, mechanical ventilation, shock, and number of months since the comprehensive interview

Abbreviations: GEE = generalized estimating equations; MAR = missing at random; MNAR =missing not at random

Reprinted with permission of Elsevier. Copyright © 2018 Elsevier.

Ferrante LE, Pisani MA, Murphy TE, Gahbauer EA, Leo-Summers LS, Gill TM. The association of frailty with post-ICU disability, nursing home admission, and mortality. Chest. 2018 Jun;153(6):1378–1386. doi: 10.1016/j.chest.2018.03.007. Epub 2018 Mar 17. PMID: 29559308.