Table 1.

Schedule of enrollment, interventions and assessments during this study according to SPIRIT [28]

Study period
	Enrollment/allocation	Post-allocation	Follow-up		Close-out
Timepoint	D0 (= BL)	D0 (= BL)	W1, W2, W3	W4	W12
Enrollment
Clinical evaluation	X
Eligibility screen	X
Allocation	X
Interventions
rESWT		X	X
C + E		X	X
Assessments
A, G, BH, BW, Du, ES, MS, Co	X
Safety		X	X	X	X
PSEQ score	X		X	X	X
NRS score	X		X	X	X
OLBPDQ score	X		X	X	X
PHQ-9 score	X		X	X	X

D0, day zero; BL, baseline; W, week; rESWT, radial extracorporeal shock wave therapy; C + E, celecoxib and eperisone; A, age; G, gender; BH, body height; BW, body weight; Du, duration, ES, education status; MS, marriage status; Co, comorbidities; PSEQ, Pain Self-Efficacy Questionnaire; NRS, numerical rating scale; OLDPDQ, Oswestry Low Back Pain Disability Questionnaire; PHQ-9, Patient Health Questionnaire 9