Skip to main content

Table 1 Characteristics of participants at baseline.

From: The effectiveness of the McKenzie method in addition to first-line care for acute low back pain: a randomized controlled trial

  McKenzie (N= 73) First-line Care Group (N= 73)
Age 47.5 ± 14.4 45.9 ± 14.9
Sex (female) 38 (52%) 35 (48%)
Duration of current low back pain episode
   Less than 2 weeks 48 (66%) 49 (67%)
   From 2 to 6 weeks 25 (34%) 24 (33%)
Pain radiating to the leg 33 (45%) 36 (50%)
Pain is movement-dependant* 61 (84%) 58 (80%)
Previous episode of low back pain 54 (74%) 49 (67%)
Participating in moderate exercise 44 (60%) 46 (63%)
Taking medication (any types) 54 (74%) 52 (71%)
Using non-steroidal anti-inflammatory drugs 28 (38%) 22 (30%)
Days off work or school due to low back pain 0.7 ± 1.4 0.8 ± 1.2
Compensation case (worker's compensation) 3 (4%) 1 (1%)
General health status
   Excellent 11 (15%) 16 (22%)
   Very good 35 (48%) 37 (51%)
   Good 18 (25%) 17 (23%)
   Fair 6 (8%) 2 (3%)
   Poor 3 (4%) 1 (1%)
Pain 6.6 ± 1.8 6.3 ± 1.9
Disability§ 13.7 ± 5.5 13.5 ± 5.3
Function 3.7 ± 1.6 3.4 ± 1.8
  1. Data are means ± standard deviations or frequencies (%).
  2. *Positive answer to question 'Does your pain change in intensity or location depending on any position or movement?'.
  3. Moderate exercise was any type of exercise performed for at least 30 min, three times per week or more.
  4. Numerical rating scale, scored from 0 (no pain) to 10 (worst pain possible).
  5. §Roland-Morris Disability Questionnaire, scored from 0 (no disability) to 24 (high disability).
  6. Patient Specific Functional Scale, scored from 0 (unable to perform activity) to 10 (able to perform activity at pre-injury level).
  7. NSAIDs, non-steroidal anti-inflammatory drugs.