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Table 4 Characteristics of the subjects included in the studies

From: The prevalence of myofascial trigger points in neck and shoulder-related disorders: a systematic review of the literature

Study

Stage and type of disorder

Patients Sample, n

Sex, % Female

Age (y), Mean ± SD or %

Other Characteristics, Mean ± SD or %

Healthy Controls Sample, n

Sex, % Female

Age (y), Mean ± SD or %

Other Characteristics, Mean ± SD or %

Alonso-Blanco et al., 2011

Chronic TTH

20 Children (6–12 years)

20 Adults (18–47 years)

50% female

Children = 8 ± 2 years

Adults = 41 ± 11 years

PH(years)-

Children = 1.6 ± 0.8

Adults = 8.6 ± 6.5

HI (NPRS)-

Children = 5.0 ± 1.2

Adults = 5.9 ± 1.1

HD (hours/days)-

Children = 4.8 ± 2.6

Adults = 7.3 ± 2

HF(days/week)-

Children = 4.0 ± 0.9

Adults = 4.3 ± 0.9

0

Not assessed

Not assessed

Not assessed

Bron et al., 2011

Chronic SP

72 patients

69% Female

43.9 ± 12.3 years

Duration-

6–9 months = 23%

9–12 months = 19%

1–2 years = 18%

2–5 years = 19%

> 5 years = 19%

Recurrence rate-

1st = 36%

2nd = 26%

3rd > = 37%

0

Not assessed

Not assessed

Not assessed

Fernandez-Perez et al., 2012

Acute WAD

20 participants aged over 20 years

50% women

28.7 ± 12.4 (22.9,34.4)

Height, cm: 170.0 ± 10.6 (165.0,175.0)

Weight kg: 67.7 ± 16.3 (60.1,75.4)

Time from accident, d: 26.6 ± 3.8 (24.8,28.4)

Current pain (NPRS): 6.2 ± 2.6 (5.0, 7.5)

Worst pain (NPRS): 8.0 ± 2.0 (7.0, 8.9)

Lowest pain (NPRS): 3.3 ± 2.9 (1.9, 4.7)

20

50% female

29.1 ± 12.2 (23.3, 34.8)

Height cm: 160.7 ± 39.1 (142.3, 179.0)

Weight kg: 64.1 ± 23.3 (53.2, 75.1)

Fernández-De-Las-Peñas, 2012

NSP

16 Blue collar workers

19 White collar worker

Blue = 62% Female

White = 75% female

Blue = 44 ± 13 years

White = 44 ± 14 years

PH (months)-

Blue = 13.2 ± 5.3

White = 9.1±  5.5

MP (NPRS)-

Blue = 5.0 ± 2.5

White = 3.8 ± 2.6

0

Not Assessed

Not Assessed

Not Assessed

Hidalgo-Lozano et al., 2010

ULSIStage of condition unclear

12 patients

42% female

25 ± 9 years

 

10

50% female

26 ± 8 years

 

Sari 2012

Acute and chronic Cervical radiculopathy

244

52% female

44.6 ± 10.3 years

BMI (kg/m2)- 26.28 ± 5.25

Social status:

Married 70%, single 23%, widow 7%

Education:

University 40%, high school 38%, primary education 18%, uneducated 4%

Occupation:

Housewife 32%, worker 25%, retired 13%, student 9%, officer 8%, nurse 5%, other 8%

Major trauma history 15.6%

122

N/A

43.8 ± 9.8 years

N/A

Tali et al., 2014

EM

Stage unclear

20 Physical therapy students

90% female

24.95 ± 1.79 years

BMI (kg/m2): 21.68 ± 2.62

HF (days in the past 3 months):

6.60 ± 5.88

AS (NPRS): 6.45 ± 1.50

20 Physical Therapy students

85% female

25.65 ± 1.42 years.

BMI (kg/m2)-

21.69 ± 2.08

  1. Abbreviations: TTH tension type headache, SP Shoulder pain, WAD Whiplash associated disorder, NSP Non-specific pain, EM Episodic migraines, ULSI Unilateral shoulder impingement, SD Standard deviation, PH Pain history, HI Headache intensity, HD Headache duration, HF Headache frequency, AS Average severity, NPRS Numeric pain rating scale, MP Mean pain, BMI Body mass index