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Table 4 Multivariate regression models of Ps and Pd as predictors of selected clinical outcomes

From: Latent variables may be useful in pain’s assessment

Model number

Dependent variable

Pd standardized regression coefficient

p

Ps standardized regression coefficient

p

Total R2

R2(covariates only)

1

Chronic pain

0.25

≤0.001

0.32

≤0.001

0.30

0.02

2

Pain “all over”

−0.32

≤0.001

0.11

0.04

0.19

0.08

3

Legs

−0.35

≤0.001

0.24

≤0.001

0.40

0.22

4

Feet

−0.25

≤0.001

0.16

0.006

0.26

0.18

5

Knees

−0.33

≤0.001

0.22

≤0.001

0.38

0.22

6

Hip

−0.29

≤0.001

0.12

0.02

0.24

0.14

7

Back

−0.22

≤0.001

−0.20

≤0.001

0.25

0.16

8

Summed pain

−0.42

≤0.001

0.25

≤0.001

0.58

0.34

9

Alzheimer’s (r)

−0.07

0.107

−0.16

≤0.001

0.06

0.03

10

Cancer (r)

0.19

≤0.001

−0.05

0.38

0.16

0.11

11

Arthritis (r)

−0.16

≤0.001

0.15

0.001

0.14

0.09

12

CA (i)

0.03

0.42

0.02

0.67

0.01

0.01

13

Arthritis (i)

−0.10

0.03

0.15

0.002

0.10

0.07

14

Both (i)

−0.09

0.04

0.12

0.02

0.07

0.05

15

Opiate use

−0.014

≤0.001

0.06

0.17

0.25

0.23

16

NSAID use

0.05

0.20

0.09

0.03

0.03

0.02

17

Health

−0.38

≤0.001

0.02

0.76

0.20

0.05

18

QOL

−0.47

≤0.001

0.00

0.99

0.25

0.02

19

Life Space

0.10

0.02

0.04

0.32

0.09

0.07

20

Sleep Disturbances (Total)

0.55

≤0.001

0.02

0.71

0.33

0.03

21

Early wakening

−0.36

≤0.001

0.07

0.19

0.18

0.05

22

Frequent wakening

−0.17

≤0.001

0.11

0.02

0.07

0.03

23

Feeling tired

−0.44

≤0.001

0.10

0.07

0.27

0.06

24

Agitation (summed)

−0.19

≤0.001

0.01

0.88

0.05

0.01

25

NPI Nighttime agitation

−0.17

≤0.001

0.02

0.68

0.04

0.01

26

NPI restless

−0.05

0.23

0.01

0.88

0.00

0.00

27

NPI impatient

−0.05

0.19

0.00

0.95

0.02

0.02

28

NPI Δ weight

−0.08

0.06

0.02

0.62

0.02

0.01

29

NPI resistive

−0.09

0.03

0.03

0.54

0.04

0.03

30

NPI sad

−0.18

≤0.001

0.01

0.77

0.06

0.02

31

5 chair stands

0.03

0.58

0.08

0.14

0.04

0.03

32

Stands safely

0.19

≤0.001

−0.05

0.38

0.16

0.11

33

Falls (i)

−0.07

0.11

−0.02

0.71

0.02

0.01

34

Falls (r)

−0.32

≤0.001

0.00

0.99

0.19

0.09

35

Fear of falling

−0.29

≤0.001

0.00

0.97

0.16

0.08

36

Nursing Home

−0.08

0.04

−0.07

0.12

0.02

0.01

37

DNR declaration

0.02

0.66

0.04

0.43

0.01

0.01

38

DNR mode

0.00

0.93

0.01

0.83

0.01

0.01

39

DNR

0.03

0.53

0.05

0.40

0.01

0.00

  1. Pd = Depression related pain independent predictor variable; Ps = Somatic related pain independent predictor variable; Number of pain medications (NPainmeds); Model Covariates: Live alone, age, gender, BMI, Income, MMSE; CA = cancer; DNR = Do Not Resusitate order; (i) = informant rated; NPI = Neuropsychiatric Inventory; NSAID = non-steriodal anti-inflammatory agents; QOL = quality of life; (r) = respondant rated.