Table 1 Socio-demographic, pain sensation, and cardiovascular variables in fibromyalgia patients (FM) and healthy women.

From: Impact of homeostatic body hydration status, evaluated by hemodynamic measures, on different pain sensitization paths to a chronic pain syndrome

Variables

FM patients (n = 48)

Healthy women (n = 37)

Bootstrap 95% CI

B (SE)

p

Lower

Upper

Age (years)

52.35 ± 8.95

49.84 ± 6.65

 − 0.78

5.75

2.52 (1.69)

0.136

BMI (kg/m2)

28.12 ± 5.54

25.71 ± 3.22

0.63

4.32

2.41 (0.92)

0.008

Education (years)

11.33 ± 4.10

12.58 ± 4.10

 − 3.01

0.46

 − 1.25 (0.88)

0.161

HCC (Ln)*

4.10 ± 1.25

3.67 ± 1.18

 − 0.12

0.93

0.43 (0.26)

0.121

SREP (cm)

1.11 ± 1.03

 − 0.35 ± 1.20

1.02

1.95

1.46 (0.24)

0.001

Pain threshold (kg/cm2)

2.30 ± 1.38

3.67 ± 1.30

 − 1.97

 − 0.77

 − 1.36 (0.30)

0.001

Pain tolerance (kg/cm2)

7.87 ± 3.11

9.87 ± 1.90

 − 3.03

 − 0.95

 − 2.01 (0.55)

0.002

IBI (ms)

866.4 ± 109.8

895.6 ± 102.6

 − 74.50

17.37

 − 29.19 (22.79)

0.209

SBP (mmHg)

109.9 ± 14.7

106.7 ± 8.3

 − 1.40

8.23

3.22 (2.50)

0.208

DBP (mmHg)

72.1 ± 10.3

70.5 ± 7.3

 − 2.31

5.42

1.53 (1.93)

0.441

MAP (mmHg)

88.1 ± 11.8

85.9 ± 7.7

 − 1.74

6.47

2.16 (2.12)

0.312

SV (ml)

71.7 ± 13.8

76.3 ± 16.7

 − 11.47

2.11

 − 4.59 (3.43)

0.188

CO (L/min)

4.98 ± 0.92

5.17 ± 1.27

 − 0.72

0.30

 − 0.19 (0.25)

0.469

SVR (dyne*sec*cm−5)

1461.8 ± 345.0

1388.0 ± 312.6

 − 83.47

222.15

73.80 (74.58)

0.320

  1. Confidence intervals (CI) and unstandardized beta (B) coefficients and standard errors (SE), and p from the regression analysis conducted with the bootstrap procedure.
  2. CI confidence interval, BMI body mass index, HCC hair cortisol concentration, IBI interbeat interval, SBP systolic blood pressure, DBP diastolic blood pressure, MAP mean arterial pressure, SV stroke volume, CO cardiac output, SVR systemic vascular resistance, SREP slowly repeated evoked pain.
  3. *Values of HCC in pg/mg were 112.70 ± 111.07 in FM and 76.45 ± 97.80 in healthy women.
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