ACA | Available case analysis |
ACE (inhibitor) | Angiotensin-converting-enzyme (inhibitor) |
AE | Adverse events |
AIDS | Acquired immune deficiency syndrome |
ANOVA | Analysis of variance |
ARB | Angiotensin II receptor blockers |
ASA | Acetylsalicylic acid (aspirin) |
AZT | Azidothymidine |
bid | Twice daily |
BNF | British National Formulary |
Ca++ | Calcium |
CCA | Cost-consequences analysis |
CCB | Calcium channel blocker |
CCT | Controlled clinical trial |
CDH | Chronic daily headache |
CEA | Cost-effectiveness analysis |
CI | Confidence interval |
CNS | Central nervous system |
COCP | Combined oral contraceptive pill |
CSMT | Chiropractic spinal manipulative therapy |
CT | Computerised tomography (scan) |
CUA | Cost-utility analysis |
df | Degrees of freedom |
DH | Department of Health |
DHE | Dihydroergotamine |
ECG | Electrocardiogram |
FDI | Functional disability inventory |
GDG | Guideline development group |
GP | General practitioner |
GPRD | General practice research database |
GPwSI | General practitioner with a special interest (in headache) |
GRADE | Guidelines Recommendations Assessment Development Evaluation |
GRP | Guideline review panel |
HADS | Hospital anxiety and depression scale |
HES | Hospital episode statistics |
HIV | Human immunodeficiency virus |
HIT6 | Headache impact test-6 |
HRQL | Health related quality of life |
HRT | Hormone replacement therapy |
HTA | Health technology assessment |
ICER | Incremental cost-effectiveness ratio |
ICHD | International classification of headache disorders |
ICU | Intensive care unit |
IHS | International Headache Society |
im | Intramuscular |
INB | Incremental net benefit |
IQR | Inter quartile range |
ITT | Intention to treat (analysis) |
iv | Intravenous |
LS | Least square |
MAO | Monoamine oxidase |
MHRA | Medicines and healthcare products regulatory agency |
MIDAS | Migraine disability assessment |
mITT | Modified intention to treat (analysis) |
MOH | Medication overuse headache |
MRI | Magnetic resonance imaging |
MSQoL | Migraine specific quality of life |
N/A | Not applicable |
NHS | National health service |
NICE | National institute for health and clinical excellence |
NMA | Network meta-analysis |
NNT | Number needed to treat |
NPR | National patient register |
NPV | Negative predictive value |
NR | Not reported |
NS | Not significant |
NSAID | Non-steroidal anti-inflammatory drug |
OCP | Oral contraceptive pill |
OR | Odds ratio |
PASA | NHS purchasing and supply agency |
pedMIDAS | Paediatric migraine disability assessment |
PICO | Framework incorporating patients, interventions, comparisons, outcomes |
PP | Per protocol |
PPIP | Patient and public involvement programme |
PPV | Positive predictive value |
PSA | Probabilistic sensitivity analysis |
QALY | Quality-adjusted life year |
QoL | Quality of life |
RCT | Randomised clinical trial |
RR | Relative risk or risk ratio |
sc | Subcutaneous |
SD | Standard deviation |
SE | Standard error |
SEM | Standard error of the mean |
SF-36 | Short form-36 |
SR | Systematic review |
SNRI | Serotonin-norepinephrine re-uptake inhibitor |
SSRI | Selective serotonin re-uptake inhibitor |
TAR | Therapist assisted relaxation |
TCM | Traditional Chinese medicine |
TENS | Transcutaneous electrical nerve stimulation |
TIA | Transient ischaemic attack |
tid | Three times a day |
TTH | Tension type headache |
VAS | Visual analogue scale |
VRS | Verbal rating scale |
vs | Versus |
WHO | World Health Organisation |