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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

767 questions in 53 reviews · Back and Neck

current versions
No studies 149 · 19.4%Ungraded 41 · 5.3%Very low 168 · 21.9%Low 226 · 29.5%Moderate 156 · 20.3%High 27 · 3.5%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Summary of findings: Exercise treatment vs no treatment, usual care or placebo
Pain intensity (0‐100; 0 = no pain): Earliest
Exercise therapy for chronic low back pain (2021) · Cochrane
no estimate extracted2746 participantsModerate
Summary of findings: Exercise treatment vs no treatment, usual care or placebo
Functional limitations (0‐100; 0 = no functional limitations): Earliest
Exercise therapy for chronic low back pain (2021) · Cochrane
no estimate extracted2942 participantsModerate
Summary of findings: Exercise treatment vs other conservative treatments
Pain intensity (0‐100 points; 0 = no pain): Earliest
Exercise therapy for chronic low back pain (2021) · Cochrane
no estimate extracted6295 participantsLow
Summary of findings: Exercise treatment vs other conservative treatments
Functional limitations (0‐100 points; 0 = no functional limitations): Earliest
Exercise therapy for chronic low back pain (2021) · Cochrane
no estimate extracted6004 participantsModerate
Summary of findings: Exercise treatment vs other conservative treatments
*The anticipated absolute effects without exercise come from the range of outcomes at
Exercise therapy for chronic low back pain (2021) · Cochrane
no estimate extractedNRNo studies
Therapeutic ultrasound vs placebo
Pain intensity Scale: VAS (100‐point scale; higher scores mean increased pain) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted3 studies · 121 participantsVery low
Therapeutic ultrasound plus exercise vs exercise alone
Back‐specific functional status Scale: Oswestry Disability Questionnaire (higher scores mean worse function) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted2 studies · 79 participantsVery low
Therapeutic ultrasound plus exercise vs exercise alone
Overall improvement or satisfaction · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Therapeutic ultrasound plus exercise vs exercise alone
Well‐being Scale: general health subscale of SF‐36 (higher scores mean worse well‐being) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted2 studies · 79 participantsVery low
Therapeutic ultrasound plus exercise vs exercise alone
Disability · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Therapeutic ultrasound plus exercise vs exercise alone
Adverse events · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Therapeutic ultrasound vs placebo
Pain intensity Scale: VAS (number of responders at 30% reduction of pain) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
RR 1.08 [0.81, 1.44]1 study · 225 participantsModerate
Therapeutic ultrasound vs placebo
Back‐specific functional status Scale: Functional Rating Index, Roland‐Morris Disability Questionnaire, or Oswestry Disability Questionnaire (higher scores mean worse function) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted4 studies · 325 participantsLow
Therapeutic ultrasound vs placebo
Overall improvement or satisfaction · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted2 studies · 486 participantsLow
Therapeutic ultrasound vs placebo
Well‐being Scale: general health subscale of SF‐36 (higher scores mean worse well‐being) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted2 studies · 267 participantsModerate
Therapeutic ultrasound vs placebo
Disability · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Therapeutic ultrasound vs placebo
Adverse events · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted1 study · 225 participantsLow
Therapeutic ultrasound plus exercise vs exercise alone
Pain intensity Scale: VAS (100‐point scale; higher scores mean increased pain) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extracted2 studies · 70 participantsVery low
Therapeutic ultrasound plus exercise vs exercise alone
Pain intensity Scale: VAS (number of responders at 30% reduction of pain) · adults with chronic low back pain
Therapeutic ultrasound for chronic low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Leg pain ‒short‐term · lumbosacral radicular pain
Epidural corticosteroid injections for lumbosacral radicular pain (2020) · Cochrane
no estimate extracted8 studies · 949 participantsModerate
Intervention NR
Disability ‒short‐term (> 2 weeks but ≤ 3 months) Disability reported using multiple scales (RMDQ and ODI). Disability scores were converted to a common 0 to 100 scale. Higher scores indicate greater disability. · lumbosacral radicular pain
Epidural corticosteroid injections for lumbosacral radicular pain (2020) · Cochrane
no estimate extracted12 studies · 1367 participantsModerate
Intervention NR
Minor adverse events** ‒short‐term (> 2 weeks but ≤ 3 months) Minor adverse events provided as the proportion of patients reporting any untoward medical occurrence after an epidural injection without hospitalisations. · lumbosacral radicular pain
Epidural corticosteroid injections for lumbosacral radicular pain (2020) · Cochrane
RR 1.14 [0.91, 1.42]8 studies · 877 participantsVery low
Intervention NR
Major adverse events** ‒short‐term (> 2 weeks but ≤ 3 months) Major adverse events provided as the proportion of patients reporting any untoward medical occurrence after an epidural injection with hospitalizations. · lumbosacral radicular pain
Epidural corticosteroid injections for lumbosacral radicular pain (2020) · Cochrane
no estimate extracted1 study · 160 participantsModerate
NSAIDs vs placebo
Pain intensity VAS (0 to 100; lower = better) · adults (≥ 18 years of age) with acute low back pain
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extracted4 studies · 815 participantsModerate
Selective COX‐2 inhibitors vs non‐selective NSAIDs
Return to work (%) · adults (≥ 18 years of age) with acute low back pain (LBP)
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extractedNRNo studies
NSAIDs vs placebo
Disability RMDQ (0 to 24; lower = better) · adults (≥ 18 years of age) with acute low back pain
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extracted2 studies · 471 participantsHigh
NSAIDs vs placebo
Proportion of participants experiencing global improvement Various dichotomised Likert scales; lower = better · adults (≥ 18 years of age) with acute low back pain
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
RR 1.4 [1.12, 1.75]5 studies · 1201 participantsLow
NSAIDs vs placebo
Proportion of participants experiencing adverse events · adults (≥ 18 years of age) with acute low back pain
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
RR 0.86 [0.63, 1.18]6 studies · 1394 participantsVery low
NSAIDs vs placebo
Return to work (%) · adults (≥ 18 years of age) with acute low back pain
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
RR 1.48 [0.98, 2.23]1 study · 266 participantsVery low
Selective COX‐2 inhibitors vs non‐selective NSAIDs
Change in pain intensity from baseline VAS (0 to 100; lower = better) · adults (≥ 18 years of age) with acute low back pain (LBP)
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extracted2 studies · 437 participantsLow
Selective COX‐2 inhibitors vs non‐selective NSAIDs
Disability ODI (0 to 50; lower = better) · adults (≥ 18 years of age) with acute low back pain (LBP)
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extracted2 studies · 437 participantsModerate
Selective COX‐2 inhibitors vs non‐selective NSAIDs
Proportion of participants experiencing global improvement % of dichotomized Likert scale · adults (≥ 18 years of age) with acute low back pain (LBP)
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
no estimate extracted1 study · 333 participantsLow
Selective COX‐2 inhibitors vs non‐selective NSAIDs
Proportion of participants experiencing adverse events · adults (≥ 18 years of age) with acute low back pain (LBP)
Non‐steroidal anti‐inflammatory drugs for acute low back pain (2020) · Cochrane
RR 0.97 [0.63, 1.5]2 studies · 444 participantsVery low
Acupuncture vs sham intervention
Pain intensity VAS (0 to 100; 0 = no pain, 100 = worst pain) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted7 studies · 1403 participantsLow
Acupuncture vs usual care
Pain intensity VAS (0 to 100; 0 = no pain, 100 = worst pain) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted5 studies · 1054 participantsLow
Acupuncture vs usual care
Back‐specific functional status HFAQ (0 to 100; 0 = disabled, 100 = full function) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted5 studies · 1381 participantsLow
Acupuncture vs usual care
Quality of life (QoL) – physical health SF‐12 (0 to 100; 0 = poor QoL, 100 = high QoL) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted1 study · 731 participantsModerate
Acupuncture vs usual care
QoL: mental health SF‐12 (0 to 100; 0 = poor QoL, 100 = high QoL) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted1 study · 731 participantsModerate
Acupuncture vs usual care
Adverse events Self‐reported · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
RR 3.34 [0.36, 30.68]1 study · 74 participantsLow
Acupuncture vs sham intervention
Back‐specific functional status HFAQ (0 to 100; 0 = disabled, 100 = full function) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted5 studies · 1481 participantsVery low
Acupuncture vs sham intervention
Quality of life (QoL) SF‐12 (0 to 100; 0 = poor QoL, 100 = high QoL) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted3 studies · 1068 participantsLow
Acupuncture vs sham intervention
Mental health · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted3 studies · 1068 participantsLow
Acupuncture vs sham intervention
Adverse events Self‐reported · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
RR 0.68 [0.46, 1.01]4 studies · 465 participantsLow
Acupuncture vs no treatment
Pain intensity VAS (0 to 100; 0 = no pain, 100 = worst pain) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted4 studies · 366 participantsModerate
Acupuncture vs no treatment
Back‐specific functional status HFAQ (0 to 100; 0 = disabled, 100 = full function) · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extracted5 studies · 2960 participantsModerate
Acupuncture vs no treatment
Quality of life (QoL) physical health, mental health · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Acupuncture vs no treatment
Adverse events Self‐reported · chronic nonspecific low back pain
Acupuncture for chronic nonspecific low back pain (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
WORK PARTICIPATION · People with non‐specific low back pain presenting to healthcare, occupational, general or mixed populations Prognostic…
Individual recovery expectations and prognosis of outcomes in non‐specific low back pain: prognostic factor… (2019) · Cochrane
OR 2.43 [1.64, 3.62]16 studies · 4324 participantsModerate
Intervention NR
IMPORTANT RECOVERY · People with non‐specific low back pain presenting to healthcare, occupational, general or mixed populations Prognostic…
Individual recovery expectations and prognosis of outcomes in non‐specific low back pain: prognostic factor… (2019) · Cochrane
OR 1.89 [1.49, 2.41]6 studies · 7265 participantsLow
Intervention NR
FUNCTIONAL LIMITATIONS · People with non‐specific low back pain presenting to healthcare, occupational, general or mixed populations Prognostic…
Individual recovery expectations and prognosis of outcomes in non‐specific low back pain: prognostic factor… (2019) · Cochrane
OR 1.4 [0.85, 2.31]6 studies · 1397 participantsVery low