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Table 4 Comparison of NRS and BQ Change Scores for Patients in the 3 Chronicity Categories at all Follow-up Time Points

From: Exploring the definition of «acute» neck pain: a prospective cohort observational study comparing the outcomes of chiropractic patients with 0–2 weeks, 2–4 weeks and 4–12 weeks of symptoms

  Number High-acute (0–2 weeks)
Mean (SD)
Number Mid-acute (2–4 weeks)
Mean (SD)
Number Sub-acute (4–12 weeks)
Mean (SD)
P Values
Change
NRS Neck
1 week
220 3.33 (±2.49) 42 2.52 (±2.23) 124 1.66 (±2.28) High-acute vs. Mid-acute: p = 0.053
Mid-acute vs. Subacute: p = 0.035*
High-acute vs. Subacute: p = 0.0001*
Change
BQ total
1 week
221 8.29 (±14.34) 42 7.47 (±13.98) 125 6.75 (±14.09) High-acute vs. Mid-acute: p = 0.733
Mid-acute vs. Subacute: p = 0.775
High-acute vs.
Subacute: p = 0.336
Change
NRS Neck
1 month
224 4.26 (±2.64) 54 3.55 (±2.96) 139 2.83 (±2.63) High-acute vs. Mid-acute: p = 0.086
Mid-acute vs. Subacute: p = 0.098
High-acute vs. Subacute: p = 0.0001*
Change
BQ total
1 month
223 21.87 (±16.99) 54 18.33 (±18.07) 140 15.65 (±17.53) High-acute vs. Mid-acute: p = 0.177
Mid-acute vs. Subacute: p = 0.344
High-acute vs. Subacute: p = 0.001*
Change
NRS Neck
3 months
223 4.59 (±2.75) 54 4.18 (±2.73) 131 3.30 (±2.92) High-acute vs. Mid-acute: p = 0.324
Mid-acute vs. Subacute: p = 0.061
High-acute vs. Subacute: p = 0.0001*
Change
BQ total
3 months
221 25.54 (±16.40) 54 24.36 (±17.13) 132 19.14 (±19.17) High-acute vs. Mid-acute: p = 0.637
Mid-acute vs. Subacute: p = 0.084
High-acute vs. Subacute: p = 0.001*
Change
NRS Neck
6 months
227 4.93 (±2.47) 52 3.95 (±2.56) 132 3.31 (±2.61) High-acute vs. Mid-acute: p = 0.012*
Mid-acute vs. Subacute: p = 0.136
High-acute vs. Subacute: p = 0.0001*
Change
BQ total
6 months
192 18.74 (±16.04) 38 17.34 (±14.47) 109 11.54 (±16.58) High-acute vs. Mid-acute: p = 0.618
Mid-acute vs. Subacute: p = 0.058
High-acute vs. Subacute: p = 0.0001*
Change
NRS Neck
1 year
216 4.91 (±2.60) 49 4.17 (±2.63) 127 3.41 (±2.78) High-acute vs. Mid-acute: p = 0.073
Mid-acute vs. Subacute: p = 0.101
High-acute vs. Subacute: p = 0.0001*
Change
BQ total
1 year
216 26.41 (±17.03) 49 22.56 (±16.49) 128 19.42 (±16.50) High-acute vs. Mid-acute: p = 0.151
Mid-acute vs. Subacute: p = 0.260
High-acute vs. Subacute: p = 0.0001*
  1. SD Standard Deviation, NRS Numerical rating scale for pain, BQ Bournemouth questionnaire; * = p < 0.05