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Table 2 Influence of demographics and pain characteristics on Military Personality Inventory (MPI) results of adolescents with complex regional pain syndrome (CRPS)

From: Impact of adolescent complex regional pain syndrome on the psychopathology of young men ahead of military service: a retrospective cohort analysis of Korean conscription data

Variable

Prevalence

Logistic regression analysis

Normal MPI (n = 43)

Abnormal MPI (n = 20)

OR

95% CI

P

Age (year, median)

19.35

19.28

0.25

0.01–4.24

0.334

Education [n (%)]

 College or more

28 (65.1)

12 (60.0)

1

  

 High school or less

15 (34.9)

8 (40.0)

0.99

0.22–4.52

0.986

Socioeconomic status [n (%)]

 High

7 (16.3)

1 (5.0)

1

  

 Middle

23 (53.5)

10 (50.0)

14.38

0.50–413.72

0.120

 Low

13 (30.2)

9 (45.0)

23.71

0.81–695.42

0.066

Parental coresidence status [n (%)]

 Both

36 (83.7)

18 (90.0)

1

  

 One parent

6 (14.0)

2 (10.0)

0.41

0.02–7.00

0.536

 None

1 (2.3)

0 (0.0)

0

0

1.000

mCSS (2–9)

4.21

3.70

0.73

0.37–1.43

0.358

NRS (0–10)

6.40

5.95

0.97

0.56–1.68

0.358

Pain duration (month)

21.40

40.35

1.05

1.02–1.08

0.002*

CRPS type [n (%)]

 I

34 (79.1)

15 (75.0)

1

  

 II

9 (20.9)

5 (25.0)

3.76

0.61–23.33

0.155

Affected site [n (%)]

 Upper extremity

12 (27.9)

6 (30.0)

1

  

 Lower extremity

29 (67.4)

14 (70.0)

0.98

0.20–4.90

0.983

 Multiple

2 (4.7)

0 (0.0)

0

0

0.999

Treatment [n (%)]

 Physical or pharmacological therapy

15 (34.9)

6 (30.0)

1

  

 Sympathetic nerve intervention

22 (51.2)

11 (55.0)

6.90

0.76–62.51

0.086

 Spinal cord stimulation

6 (14.0)

3 (15.0)

4.06

0.38–43.02

0.245

  1. MPI Military Personality Inventory, OR Odds ratio, CI Confidence interval, mCSS Modified Complex regional pain syndrome Severity Score, NRS Numerical rating scale, CRPS Complex regional pain syndrome