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Table 5 Model 2: Results of linear mixed model for effect of dementia (CDR-SoB) measured longitudinally on P-ADL level over time

From: Course of activities of daily living in nursing home residents with dementia from admission to 36-month follow-up

Covariates

Unadjusted models

Adjusted models

Regr. coeff. (SE)

p-value1

Regr. coeff. (SE)

p-value1

Effect of main variable

 Time

0.25 (0.12)

0.038

0.27 (0.12)

0.021

 Time*Time

0.005 (0.009)

0.580

− 0.0004 (0.009)

0.964

 Time*Time*Time

−0.0002 (0.0002)

0.267

−0.00007 (0.0002)

0.687

 CDR-SoB

0.61 (0.05)

< 0.001

0.55 (0.05)

< 0.001

 Time*CDR-SoB

−0.01 (0.01)

0.242

−0.01 (0.01)

0.193

 Time*Time*CDR-SoB

0.0001 (0.0008)

0.887

0.0003 (0.0008)

0.672

 Time*Time*Time* CDR-SoB

0.000006 (0.00002)

0.704

−0.00000001 (0.00002)

0.996

Effect of additional variables at baseline

 Socio–demographic information

  Age (per years)

0.003 (0.02)

0.886

0.01 (0.02)

0.530

  Women

−0.49 (0.33)

0.143

−0.23 (0.32)

0.476

  Single

−0.65 (0.30)

0.028

−0.46 (0.29)

0.116

Effect of additional variables measured longitudinally

 GMHR

  Poor / Fair (Good/Excellent– ref.)

2.04 (0.16)

< 0.001

1.77 (0.16)

< 0.001

 NPI-NH

  Agitation sub-syndrome

0.07 (0.01)

< 0.001

0.04 (0.01)

0.002

  Psychosis sub-syndrome

0.07 (0.02)

0.001

−0.002 (0.02)

0.915

  Affective sub-syndrome

0.11 (0.02)

< 0.001

0.06 (0.02)

0.001

  Apathy

0.22 (0.03)

< 0.001

0.14 (0.03)

< 0.001

 Use of psychotropic medication

  Antipsychotics

0.19 (0.26)

0.450

0.08 (0.24)

0.730

  Antidepressants

−0.003 (0.21)

0.988

− 0.17 (0.20)

0.391

  Anxiolytics

0.06 (0.22)

0.780

0.03 (0.21)

0.894

  Hypnotics/Sedatives

0.42 (0.21)

0.041

0.17 (0.20)

0.382

  Anti-dementia medication

−1.44 (0.22)

< 0.001

−1.17 (0.21)

< 0.001

 NH Characteristics

  RU (vs SCU)

0.71 (0.24)

0.003

0.59 (0.23)

0.009

  1. CDR-SoB: The sum score of the domains in the Clinical Dementia Rating scale, BL: Baseline, GMHR: General Medical Health rating scale, NPI-NH: Neuropsychiatric Inventory 12-item Nursing Home version, NH: Nursing home, RU: Regular unit, SCU: Special care unit
  2. N = 515 at T1, N = 383 at T2, N = 320 at T3, N = 241 at T4, N = 212 at T5, N = 157 at T6, N = 121 at T7
  3. T1: baseline, T2: 6-month assessment, T3: 12-month assessment, T4: 18-month assessment, T5: 24-month assessment, T6: 30-month assessment, T7: 36-month assessment
  4. 1Bold text indicate p-value < 0.05