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Table 1 Demographic characteristics of the study population (N = 198, female = 0)

From: Job requirements and physical demands (JRPD) questionnaire: cross-cultural adaptation and psychometric evaluation in Iranian Army personnel with chronic low back pain

Characteristics Mean (SD)
Age (year) 32 (10.40)
Height (cm) 175 (6.80)
Weight (kg) 74 (1.10)
Pain intensity (VAS) 36 (25.30)
  Frequency (%)
Mild pain (5–44 mm) 128 (64.60)
Moderate pain (45–74 mm) 49 (24.80)
Severe pain (75–100 mm) 21 (10.60)
Educational status
 Academic 151 (76.30)
 Non-academic 47 (23.70)
Marital status
 Single 82 (41.40)
 Married 116 (58.60)
Employment status
 Employed 128 (64.60)
 Unemployed 70 (35.40)
Service status
 Military 139 (70.20)
 Non-military 59 (29.80)
Military ranks
 Colonel 6 (3.00)
 Major 10 (5.10)
 Captain 15 (7.60)
 Lieutenant 126 (63.70)
 Master sergeant 11 (5.50)
 Sergeant 5 (2.50)
 Soldier 25 (12.60)
  1. Abbreviations: SD standard deviation, Min minimum, Max maximum, VAS visual analog scale