. 2020 Jun 11;268(10):3646–3665. doi: 10.1007/s00415-020-09981-3

Table 1.

Search strategy

Database	Keywords	Hits
Cinahl	((MH "Headache+") OR (TI headache) OR (AB headache) OR (TI headaches) OR (AB headaches) OR (MH "Migraine") OR (TI "migraine") OR (AB “migraine”) OR (TI "migraine") OR (AB “migraine”) OR (MH "Tension Headache") OR (MH "Cluster Headache")) ((MH "Telemedicine+") OR (MH "Telehealth+") OR (TI "telemedicine”) OR (AB “"telemedicine”) OR (TI "telehealth") OR (AB “telehealth”) OR (TI “telecare”) OR (AB “telecare”) OR (TI "mobile health") OR (AB "mobile health") OR (TI "mhealth") OR (AB "mhealth") OR (TI "ehealth") OR (AB "ehealth") OR (MH "Patient Portals") OR (TI "patient portal") OR (AB “patient portal") OR (TI "patient portals") OR (AB “patient portals") OR (MH "Mobile Applications") OR (TI “mobile application") OR (AB “mobile application") OR (TI “mobile applications") OR (AB “mobile applications") OR (TI app) OR (AB app) OR (TI apps) OR (AB apps)) ((TI “electronic diary”) OR (AB “electronic diary”) OR (TI “e-diary”) OR (AB “e-diary”) OR (TI “headache e-diary”) OR (AB “headache e-diary”) OR (TI “headache e-diaries”) OR (AB “headache e-diaries”) OR (TI “headache diary”) OR (AB “headache diary”) OR (TI “headache diaries”) OR (AB “headache diaries”) OR (TI “pain e-diary”) OR (AB “pain e-diary”) OR (TI “pain e-diaries”) OR (AB “pain e-diaries”) OR (TI “pain diary”) OR (AB “pain diary”) OR (TI “pain diaries”) OR (AB “pain diaries”) OR (MH "Smartphone") OR (TI "smartphone") OR (AB "smartphone") OR (TI "smartphones") OR (AB "smartphones") OR (TI “self-monitoring”) OR (AB “self-monitoring”)) S2 OR S3 S1 AND S4 S1 AND S4 Limiters—Published Date: 20,000,101–20,191,231 Narrow by Language:—English Search modes—Boolean/Phrase	273
PsycINFO	((DE "Headache" OR DE "Migraine Headache" OR DE "Muscle Contraction Headache") OR (TI headache) OR (AB headache) OR (TI headaches) OR (AB headaches) OR (MM "Migraine Headache") OR (TI "migraine disorder") OR (AB “migraine disorder”) OR (TI "migraine disorders") OR (AB “migraine disorders”) OR (MM "Muscle Contraction Headache")) ((MM "Telemedicine") OR (TI "telemedicine”) OR (AB “"telemedicine”) OR (TI "telehealth") OR (AB “telehealth”) OR (TI “telecare”) OR (AB “telecare”) OR (TI "mobile health") OR (AB "mobile health") OR (TI "mhealth") OR (AB "mhealth") OR (TI "ehealth") OR (AB "ehealth") OR (TI "patient portal") OR (AB “patient portal") OR (TI "patient portals") OR (AB “patient portals") OR (TI “mobile application") OR (AB “mobile application") OR (TI “mobile applications") OR (AB “mobile applications") OR (TI app) … ((TI “electronic diary”) OR (AB “electronic diary”) OR (TI “e-diary”) OR (AB “e-diary”) OR (TI “headache e-diary”) OR (AB “headache e-diary”) OR (TI “headache e-diaries”) OR (AB “headache e-diaries”) OR (TI “headache diary”) OR (AB “headache diary”) OR (TI “headache diaries”) OR (AB “headache diaries”) OR (TI “pain e-diary”) OR (AB “pain e-diary”) OR (TI “pain e-diaries”) OR (AB “pain e-diaries”) OR (TI “pain diary”) OR (AB “pain diary”) OR (TI “pain diaries”) OR (AB “pain diaries”) OR (MM "Cell … S2 OR S3 S1 AND S4 Limiters—Publication Year: 2000–2019 Expanders—Apply equivalent subjects Narrow by Language:—english Search modes—Boolean/Phrase	256
PubMed	((("headache"[MeSH Terms] OR headache[Title/Abstract] OR headaches[Title/Abstract]) OR ("migraine disorders"[MeSH Terms] OR "migraine disorder"[Title/Abstract] OR "migraine disorders"[Title/Abstract]) OR ("tension-type headache"[MeSH Terms] OR "tension-type headache"[Title/Abstract] OR "tension-type headaches"[Title/Abstract] OR "tension type headache"[Title/Abstract] OR "tension type headaches"[Title/Abstract]) OR ("cluster headache"[MeSH Terms] OR "cluster headache"[Title/Abstract] OR "cluster headaches"[Title/Abstract]) OR ("headache disorders"[MeSH Terms] OR "headache disorder"[Title/Abstract] OR "headache disorders"[Title/Abstract])) AND (("telemedicine"[MeSH Terms] OR "telemedicine"[Title/Abstract] OR "telehealth"[Title/Abstract] OR "telecare"[Title/Abstract] OR "mobile health"[Title/Abstract] OR "mhealth"[Title/Abstract] OR "ehealth"[Title/Abstract]) OR ("patient portals"[MeSH Terms] OR "patient portal"[Title/Abstract] OR "patient portals"[Title/Abstract]) OR ("mobile applications"[MeSH Terms] OR "mobile application"[Title/Abstract] OR "mobile applications"[Title/Abstract] OR app[Title/Abstract] OR apps[Title/Abstract]) OR ("electronic diary"[Title/Abstract] OR "e-diary"[Title/Abstract] OR "headache e-diaries"[Title/Abstract] OR "headache diary"[Title/Abstract] OR "headache diaries"[Title/Abstract] OR "pain diary"[Title/Abstract] OR "pain diaries"[Title/Abstract]) OR ("smartphone"[MeSH Terms] OR "smartphone"[Title/Abstract] OR "smartphones"[Title/Abstract]) OR "self-monitoring"[Title/Abstract])) AND (("2000/01/01"[PDAT]: "3000/12/31"[PDAT]) AND (Dutch[lang] OR English[lang]))	440

Database

Keywords

Hits

Cinahl

((MH "Headache+") OR (TI headache) OR (AB headache) OR (TI headaches) OR (AB headaches) OR (MH "Migraine") OR (TI "migraine") OR (AB “migraine”) OR (TI "migraine") OR (AB “migraine”) OR (MH "Tension Headache") OR (MH "Cluster Headache"))

((MH "Telemedicine+") OR (MH "Telehealth+") OR (TI "telemedicine”) OR (AB “"telemedicine”) OR (TI "telehealth") OR (AB “telehealth”) OR (TI “telecare”) OR (AB “telecare”) OR (TI "mobile health") OR (AB "mobile health") OR (TI "mhealth") OR (AB "mhealth") OR (TI "ehealth") OR (AB "ehealth") OR (MH "Patient Portals") OR (TI "patient portal") OR (AB “patient portal") OR (TI "patient portals") OR (AB “patient portals") OR (MH "Mobile Applications") OR (TI “mobile application") OR (AB “mobile application") OR (TI “mobile applications") OR (AB “mobile applications") OR (TI app) OR (AB app) OR (TI apps) OR (AB apps))

((TI “electronic diary”) OR (AB “electronic diary”) OR (TI “e-diary”) OR (AB “e-diary”) OR (TI “headache e-diary”) OR (AB “headache e-diary”) OR (TI “headache e-diaries”) OR (AB “headache e-diaries”) OR (TI “headache diary”) OR (AB “headache diary”) OR (TI “headache diaries”) OR (AB “headache diaries”) OR (TI “pain e-diary”) OR (AB “pain e-diary”) OR (TI “pain e-diaries”) OR (AB “pain e-diaries”) OR (TI “pain diary”) OR (AB “pain diary”) OR (TI “pain diaries”) OR (AB “pain diaries”) OR (MH "Smartphone") OR (TI "smartphone") OR (AB "smartphone") OR (TI "smartphones") OR (AB "smartphones") OR (TI “self-monitoring”) OR (AB “self-monitoring”))

S2 OR S3

S1 AND S4

Limiters—Published Date: 20,000,101–20,191,231

Narrow by Language:—English

Search modes—Boolean/Phrase

273

PsycINFO

((DE "Headache" OR DE "Migraine Headache" OR DE "Muscle Contraction Headache") OR (TI headache) OR (AB headache) OR (TI headaches) OR (AB headaches) OR (MM "Migraine Headache") OR (TI "migraine disorder") OR (AB “migraine disorder”) OR (TI "migraine disorders") OR (AB “migraine disorders”) OR (MM "Muscle Contraction Headache"))

((MM "Telemedicine") OR (TI "telemedicine”) OR (AB “"telemedicine”) OR (TI "telehealth") OR (AB “telehealth”) OR (TI “telecare”) OR (AB “telecare”) OR (TI "mobile health") OR (AB "mobile health") OR (TI "mhealth") OR (AB "mhealth") OR (TI "ehealth") OR (AB "ehealth") OR (TI "patient portal") OR (AB “patient portal") OR (TI "patient portals") OR (AB “patient portals") OR (TI “mobile application") OR (AB “mobile application") OR (TI “mobile applications") OR (AB “mobile applications") OR (TI app) …

S2 OR S3

S1 AND S4

Limiters—Publication Year: 2000–2019

Expanders—Apply equivalent subjects

Narrow by Language:—english

Search modes—Boolean/Phrase

256

PubMed

((("headache"[MeSH Terms] OR headache[Title/Abstract] OR headaches[Title/Abstract]) OR ("migraine disorders"[MeSH Terms] OR "migraine disorder"[Title/Abstract] OR "migraine disorders"[Title/Abstract]) OR ("tension-type headache"[MeSH Terms] OR "tension-type headache"[Title/Abstract] OR "tension-type headaches"[Title/Abstract] OR "tension type headache"[Title/Abstract] OR "tension type headaches"[Title/Abstract]) OR ("cluster headache"[MeSH Terms] OR "cluster headache"[Title/Abstract] OR "cluster headaches"[Title/Abstract]) OR ("headache disorders"[MeSH Terms] OR "headache disorder"[Title/Abstract] OR "headache disorders"[Title/Abstract])) AND (("telemedicine"[MeSH Terms] OR "telemedicine"[Title/Abstract] OR "telehealth"[Title/Abstract] OR "telecare"[Title/Abstract] OR "mobile health"[Title/Abstract] OR "mhealth"[Title/Abstract] OR "ehealth"[Title/Abstract]) OR ("patient portals"[MeSH Terms] OR "patient portal"[Title/Abstract] OR "patient portals"[Title/Abstract]) OR ("mobile applications"[MeSH Terms] OR "mobile application"[Title/Abstract] OR "mobile applications"[Title/Abstract] OR app[Title/Abstract] OR apps[Title/Abstract]) OR ("electronic diary"[Title/Abstract] OR "e-diary"[Title/Abstract] OR "headache e-diaries"[Title/Abstract] OR "headache diary"[Title/Abstract] OR "headache diaries"[Title/Abstract] OR "pain diary"[Title/Abstract] OR "pain diaries"[Title/Abstract]) OR ("smartphone"[MeSH Terms] OR "smartphone"[Title/Abstract] OR "smartphones"[Title/Abstract]) OR "self-monitoring"[Title/Abstract])) AND (("2000/01/01"[PDAT]: "3000/12/31"[PDAT]) AND (Dutch[lang] OR English[lang]))

440