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Table 1 Demographics and Clinical Characteristics of Sample by Study Group

From: Objective and subjective assessment of sleep in chronic low back pain patients compared with healthy age and gender matched controls: a pilot study

 

Control Group

(n = 15)

CLBP Group

(n = 15)

t-value

p-value

CI (95%)

Demographics

     

Age (yrs)

mean (SD)

38.5 (10.57)

45.0 (11.53)

-1.617

.117

-1481 - 1.74

Gender

% (n) female

53.3 (n = 8)

53.3 (n = 8)

 

1.00

 

Weight

mean (SD)

74.0 (10.69)

80.7 (21.12)

- 1.090

.285

-19.39 - 6.1

Physical Activity % (n)

   

.007†

 

None

33.3 (5)

00.0 (0)

   

Low

20.0 (3)

46.7 (7)

   

Moderate

13.3 (2)

46.7 (7)

   

High

33.3 (5)

06.6 (1)

   

Smoker

% (n)

0 (0)

26.6 (4)

 

.032†

 

Caffeine

% (n)

(> 1 cup per day)

86.6 (13)

86.6 (13)

 

1.00

 

Medication

% (n)

     

Pain

0 (0)

86.6 (13)

 

<.001†

 

Sleep

0 (0)

0 (0)

 

1.00

 

Antidepressants

0 (0)

26.6 (4)

 

.032†

 

Others

26.6 (4)

26.6 (4)

 

1.00

 

SF 36

mean (SD)

     

MCS

57.3 (3.3)

44.6 (10.1)

4.64

<.001†

6.94 - 18.52

PCS

56.4 (3.1)

44.0 (6.3)

6.93

<.001†

8.75 - 16.12

Bodily Pain

61.8 (.87)

39.9 (8.1)

10.35

<.001†

17.36 -26.42

  1. † = p < 0.05 MCS: Mental Combined ScorePCS: Physical Combined Score