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Table 2 Factor analysis of the ROSA (baseline data, FAS)

From: Validation of the relevant outcome scale for Alzheimer's disease: a novel multidomain assessment for daily medical practice

ROSA item

Symptom domain

Factor

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1

The patient is able to remember events from a long time ago.

Cognition

Factor 1

0.6857

2

The patient is able to remember events of the recent past.

Cognition

 

0.7448

3

The patient is able to plan and carry out complex procedures.

Cognition

 

0.8526

4

The patient is able to make himself understood.

Communication

 

0.7138

5

The patient is able to communicate.

Communication

 

0.7966

6

The patient shows social competence.

Communication

 

0.7289

12

The patient is competent at everyday tasks.

Function/ADL

 

0.7791

13

The patient is attentive, shows interest in his surroundings.

Function/ADL

 

0.7284

14

The patient is independent.

Function/ADL

 

0.7849

15

The patient's quality of life is (very good/very poor).

Quality of life

 

0.4509

16

The burden for the caregiver is (very small/very large).

Caregiver burden

 

0.6183

7

The patient behaves aggressively.

Behavior

Factor 2

0.7309

8

The patient is restless.

Behavior

 

0.6248

9

The patient shows behavioral changes due to delusions.

Behavior

 

0.7397

10

The patient is insecure.

Behavior

 

0.5014

11

The patient's behavior is cooperative.

Behavior

 

0.6243

  1. ADL, activity of daily living.