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Table 2 Studies excluded based on participants pain duration at baseline screening

From: Can screening instruments accurately determine poor outcome risk in adults with recent onset low back pain? A systematic review and meta-analysis

Reference Prognostic screening instruments Reason for exclusion
Bergstrom et al. (2011) [62] MPI-S Mixed cohort;b authors did not differentiate an acute/subacute group
Bernstein et al. (1994) [63] SCL-90-R Chronic pain cohort (pain > 3 months)
Morso et al. (2011) [64] PainDETECT questionnaire Chronic pain cohort (pain duration 3–12 months)
Late exclusions:a
 Fischer et al. (2014) [30] HKF-R10 Mixed cohort;b authors did not differentiate an acute/subacute group
 Hurley et al. (2001) [31] ALBPSQ Mixed cohortb,c
 Linton et al. (2011) [32] OMPSQ (Short Form) Mixed cohortb,c
 Morso et al. (2013) [65] SBT Mixed cohortb,c
 Morso et al. (2014) [33] SBT Mixed cohortb,c
 Cats-Baril et al. (1991) [35] VDPQ Mixed cohort;b unable to contact authors to request data from recent onset participants
  1. aStudy authors were contacted (or contact attempts were made) prior to study exclusion
  2. bCombination of acute/subacute/chronic pain participants
  3. cAuthors unable to provide data for ‘recent-onset’ participants
  4. MPI-S Multidimensional Pain Inventory (Swedish version), SCL-90-R Symptom Checklist 90 Revised, HKF-R10 Heidelberg Short Early Risk Assessment Questionnaire, ALBPSQ Acute Low Back Pain Screening Questionnaire, OMPSQ Orebro Musculoskeletal Pain Screening Questionnaire, SBT STarT Back Screening Tool, VDPQ Vermont Disability Prediction Questionnaire