All subjects underwent a detailed history and systemic physical examination including neurologic and musculoskeletal evaluations. To rule out any confounding etiologies, basic diagnostic laboratory tests including complete blood count and acute phase reactants (erythrocyte sedimentation rate and C-reactive protein) were performed. The patients diagnosed as having acute non-specific low back pain according to history and physical examinations were invited to participate and will be informed about the purpose and course of the study.
A primary complaint of pain in the area between the 12th rib and buttock crease without leg pain
Female or male, 20 - 80 years of age
Low back pain of less than six weeks' duration; and at least moderate pain intensity (NRS<U+2267>4)

NCT03171987_inc_T1
Qualifier
acute
NCT03171987_inc_T2
Condition
non-specific low back pain
NCT03171987_inc_T3
Procedure
physical examinations
NCT03171987_inc_T4
Observation
history
NCT03171987_inc_T5
Scope
history and physical examinations
NCT03171987_inc_T7
Procedure
complete blood count
NCT03171987_inc_T8
Procedure
acute phase reactants
NCT03171987_inc_T9
Procedure
erythrocyte sedimentation rate
NCT03171987_inc_T10
Procedure
C-reactive protein
NCT03171987_inc_T11
Scope
erythrocyte sedimentation rate and C-reactive protein
NCT03171987_inc_T12
Procedure
diagnostic laboratory tests
NCT03171987_inc_T13
Condition
pain
NCT03171987_inc_T14
Qualifier
area between the 12th rib and buttock crease
NCT03171987_inc_T15
Condition
leg pain
NCT03171987_inc_T16
Negation
without
NCT03171987_inc_T17
Person
Female
NCT03171987_inc_T18
Person
male
NCT03171987_inc_T19
Value
20 - 80 years
NCT03171987_inc_T20
Person
age
NCT03171987_inc_T21
Condition
Low back pain
NCT03171987_inc_T22
Temporal
less than six weeks' duration
NCT03171987_inc_T23
Value
at least moderate
NCT03171987_inc_T24
Measurement
pain intensity
NCT03171987_inc_T25
Measurement
NRS
NCT03171987_inc_T26
Value
4
NCT03171987_inc_T27
Scope
at least moderate pain intensity
NCT03171987_inc_T28
Scope
NRS<U+2267>4