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Table 7 Sensitivity analysis of complete case analysis compared to imputed ADL adjusted model with respect to care home admission at discharge (n = 236)

From: Living at home after emergency hospital admission: prospective cohort study in older adults with and without cognitive spectrum disorder

Variables N (%; 95%CI) with new care home admission at discharge Adjusted model Sensitivity analysis*
Complete case analysis
Total N = 236 Odds ratio (95% confidence interval)
Age
65–74 (n = 1777) 12 (0.7; 0.4–1.2) 1 1
75–84 (n = 2318) 84 (3.6; 2.9–4.5) 3.79 (2.04–7.07) 3.17 (1.69–5.96)
≥ 85 (n = 1475) 140 (9.5; 8.1–11.1) 6.43 (3.47–11.89) 4.54 (2.44–8.44)
Sex
Women (n = 3138) 167 (5.3; 4.6–6.2) 1 1
Men (n = 2432) 69 (2.8; 2.3–3.6) 0.68 (0.50–0.93) 0.73 (0.53–1.00)
Deprivation (SIMD quintile)
1 most deprived (n = 1151) 26 (2.3; 1.6–3.3) 0.52 (0.30–0.90) 0.50 (0.28–0.86)
2 (n = 1473) 56 (3.8; 2.9–4.9) 0.88 (0.56–1.39) 0.86 (0.54–1.38)
3 (n = 1266) 62 (4.9; 3.8–6.2) 1.02 (0.65–1.61) 0.95 (0.60–1.52)
4 (n = 853) 55 (6.4; 5.0–8.3) 1.26 (0.79–2.01) 1.17 (0.72–1.89)
5 most affluent (n = 827) 37 (4.5; 3.3–6.1) 1 1
Charlson Comorbidity Index (CCI)
CCI 0 (n = 1424) 83 (5.8; 4.7–7.2) 1 1
CCI 1 (n = 1496) 58 (3.9; 3.0–5.0) 1.00 (0.68–1.46) 0.97 (0.66–1.45)
CCI 2 to 5 (n = 2233) 83 (3.7; 3.0–4.6) 0.87 (0.61–1.23) 0.89 (0.62–1.28)
CCI ≥ 6 (n = 417) 12 (2.9; 1.7–5.0) 0.98 (0.50–1.90) 0.96 (0.48–1.92)
Cognitive spectrum disorder
None (n = 3903) 55 (1.4; 1.1–1.8) 1 1
Delirium alone (n = 821) 52 (6.3; 4.9–8.2) 3.04 (2.03–4.57) 2.93 (1.91–4.49)
Known dementia (n = 335) 36 (10.7; 7.9–14.5) 4.28 (2.69–6.82) 4.09 (2.51–6.67)
Delirium superimposed on dementia (n = 285) 75 (26.3; 21.6–31.7) 11.72 (7.82–17.56) 9.14 (5.98–13.99)
Unspecified cognitive impairment (n = 226) 18 (8.0; 5.1–12.2) 3.65 (2.06–6.47) 2.98 (1.66–5.35)
No. of medications
0–5 (n = 1746) 99 (5.7; 4.7–6.9) 1 1
6–10 (n = 2204) 97 (4.4; 3.6–5.3) 0.74 (0.53–1.02) 0.70 (0.51–0.98)
> 10 (n = 1620) 40 (2.5; 1.8–3.4) 0.42 (0.28–0.64) 0.35 (0.23–0.54)
Activities of daily living (ADL) score
Persistently high ADL (n = 1956) 31 (1.6; 1.1–2.2) 1 1
Changed ADL (n = 1341) 92 (6.9; 5.6–8.3) 2.99 (2.06–4.36) 4.12 (2.61–6.49)
Persistently low ADL (n = 681) 102 (15.0; 12.5–17.9) 1.89 (1.31–2.71) 2.51 (1.62–3.89)
  1. Italic text denotes results which are statistically significant
  2. 95%CI 95% confidence interval; SIMD Scottish Index of Multiple Deprivation
  3. *Complete case analysis based on data from n = 3978 (71.4%) who had complete data record