The burden attributable to primary headache disorders in children and adolescents in Ethiopia: estimates from a national schools-based study

BACKGROUND

We previously reported high prevalences of headache disorders among children (6-11 years) and adolescents (12-17 years) in Ethiopia. Here we provide data on headache-attributed burden collected contemporaneously from the same study participants. Part of the global schools-based programme within the Global Campaign against Headache, the study is the first to present such data from sub-Saharan Africa.

METHODS

A cross-sectional survey following the generic protocol for the global study was conducted in six schools (urban and rural), in Addis Ababa city and three regions of Ethiopia. The child or adolescent versions of the Headache-Attributed Restriction, Disability, Social Handicap and Impaired Participation (HARDSHIP) structured questionnaires were self-completed under supervision by pupils in class. Headache diagnostic questions were based on ICHD-3 beta but for the inclusion of undifferentiated headache (UdH).

RESULTS

Of 2,349 eligible participants, 2,344 completed the questionnaires (1,011 children [43.1%], 1,333 adolescents [56.9%]; 1,157 males [49.4%], 1,187 females [50.6%]; participating proportion 99.8%). Gender- and age-adjusted 1-year prevalence of headache, reported previously, was 72.8% (migraine: 38.6%; tension-type headache [TTH]: 19.9%; UdH: 12.3%; headache on ≥ 15 days/month (H15+): 1.2%). Mean headache frequency was 2.6 days/4 weeks but, with mean duration of 2.7 h, mean proportion of time with headache was only 1.0% (migraine: 1.4%; TTH: 0.7%; H15+: 9.1%). Mean intensity was 1.8 on a scale of 1-3. Symptomatic medication was consumed on about one third of headache days across headache types. Lost school time reportedly averaged 0.7 days over the preceding 4 weeks, representing 3.5% of school time, but was 2.4 days/4 weeks (12.0%) in the important small minority with H15+. However, actual absences with headache the day before indicated averages overall of 9.7% of school time lost, and 13.3% among those with migraine. Emotional impact and quality-of-life scores reflected other measures of burden, with clear adverse impact gradients (H15 + > migraine > TTH > UdH).

CONCLUSIONS

The high prevalence of headache among children and adolescents in Ethiopia, who represent half its population, is associated with substantial burden. Lost school time is probably the most important consequence. Estimates suggest a quite deleterious effect, likely to be reflected in both individual prospects and the prosperity of society.

The Prevalence of Headache Disorders in Children and Adolescents in Istanbul: A School-Based Study

BACKGROUND

Headache among children and adolescents is an important health problem. In this school-based epidemiological study conducted in Istanbul, we aimed to reveal the frequency of headaches in this population, define the risk factors associated with headaches, and establish the effect of headaches on the quality of life in this population.

METHODS

The child and adolescent versions of the Headache-Attributed Restriction, Disability, Social Handicap and Impaired Participation structured questionnaire were conducted in 30 schools in Istanbul. The diagnosis was made based on the International Classification of Headache Disorders III-(ICHD-3) beta version. Risk factors associated with headaches were analyzed in a binary logistic regression model.

RESULTS

Among the 5944 students (boys = 3011 [50.7%], girls 2933 [49.3%]) who completed the survey and were enrolled in this study, 3354 (56.4%) reported a headache ever. The prevalence of headaches was significantly higher in girls (62.6% vs. 50.4%, P < 0.001). Migraine prevalence was found to be 5.2%, whereas tension-type headache (TTH) prevalence was 26.1%. Being a female, age, living on the European side, and headache history in the family were found to be associated with an increased risk of having a headache. Pupils with headaches reported that they missed an average of 0.5 ± 1.5 school days due to headaches.

CONCLUSION

TTH was found to be the most common headache syndrome in Istanbul metropolitan area. Considering the effect of headaches on school success and quality of life in childhood, it is clear that the correct diagnosis of headaches and careful handling of risk factors are crucial for this population.

The prevalence of primary headache disorders in children and adolescents in Zambia: a schools-based study

BACKGROUND

The Global Campaign against Headache collects data from children (6-11 years) and adolescents (12-17) to inform health and education policies and contribute to the Global Burden of Disease (GBD) study. This survey in Zambia, part of this global enquiry, was the second from sub-Saharan Africa (SSA).

METHODS

Following the generic protocol, this was a schools-based cross-sectional survey. We used the child and adolescent versions of the structured Headache-Attributed Restriction, Disability, Social Handicap and Impaired Participation (HARDSHIP) questionnaire, self-completed by pupils within classes, in a total of nine schools in Lusaka (urban) and Copperbelt (semi-rural). These two of Zambia's ten provinces were selected to represent the country's urban/rural divide. Headache diagnostic questions were based on ICHD-3 except for undifferentiated headache (UdH).

RESULTS

Of 2,759 potential participants, 2,089 (615 children [29.4%], 1,474 adolescents [70.6%]) completed questionnaires (participating proportion 75.7%). Children were therefore under-represented (mean age 13.1 ± 2.8 years), while gender distribution (1,128 [54.0%] male, 961 [46.0%] female) was close to expectation. Observed lifetime prevalence of headache was 97.5%. Gender- and age-adjusted 1-year prevalence estimates were 85.8% for all headache, 53.2% for migraine (definite 17.5%, probable 35.7%), 12.1% for tension-type headache (TTH), 14.8% for UdH, 3.3% for all headache on ≥ 15 days/month and 0.9% for probable medication-overuse headache. Headache durations were short: only 28.6% of participants with any headache, and only 10.5% of those diagnosed as probable migraine, reported usual durations of > 2 h (the threshold for definite migraine). Of the latter, 36.6% reported < 1 h, the duration criterion for UdH. There were weak associations of migraine (definite + probable) with female gender, and of TTH and headache on ≥ 15 days/month with adolescence. Headache yesterday was reported by 22.2% of the sample, 25.5% of those with headache.

CONCLUSIONS

Headache disorders among young people are prevalent in Zambia. Among them, migraine is the most common, with UdH also highly prevalent. In this study there were diagnostic uncertainties, which rested to a large extent on the distinction between migraine and UdH among the many participants reporting headache of < 2 h' duration. Similar uncertainties occurred in the first study in SSA, in Ethiopia. Because of these, we conclude only that migraine affects at least 17.5% of these age groups in Zambia, which is still a large proportion, adult prevalence in an earlier study being 22.9%. Supplementary estimates of attributed burden are needed to inform public-health and educational policies in Zambia.

The burden attributable to headache disorders in children and adolescents in Lithuania: estimates from a national schools-based study

Background

We recently showed headache to be common in children (aged 7–11 years) and adolescents (aged 12–17) in Lithuania. Here we provide evidence from the same study of the headache-attributable burden.

Methods

Following the generic protocol for Lifting The Burden’s global schools-based study, this cross-sectional survey administered self-completed structured questionnaires to pupils within classes in 24 nationally representative schools selected from seven regions of the country. Headache diagnostic questions were based on ICHD-3 beta criteria but for the inclusion of undifferentiated headache (UdH; defined as mild headache with usual duration < 1 h). Burden enquiry was conducted in multiple domains.

Results

Questionnaires were completed by 2505 pupils (1382 children, 1123 adolescents; participating proportion 67.4%), of whom 1858 reported headache in the preceding year, with mean frequency (±SD) of 3.7 ± 4.5 days/4 weeks and mean duration of 1.6 ± 1.9 h. Mean proportion of time in ictal state, estimated from these, was 0.9% (migraine 1.5%, probable medication-overuse headache [pMOH] 10.9%). Mean intensity on a scale of 1–3 was 1.6 ± 0.6 (mild-to-moderate). Symptomatic medication was consumed on 1.5 ± 2.8 days/4 weeks. Lost school time was 0.5 ± 1.5 days/4 weeks (migraine 0.7 ± 1.5, pMOH 5.0 ± 7.8) based on recall, but about 50% higher for migraine according to actual absences recorded in association with reported headache on the preceding day. More days were reported with limited activity (overall 1.2 ± 2.4, migraine 1.5 ± 2.2, pMOH 8.4 ± 8.5) than lost from school. One in 30 parents (3.3%) missed work at least once in 4 weeks because of their son’s or daughter’s headache. Emotional impact and quality-of-life scores generally reflected other measures of burden, with pMOH causing greatest detriments, followed by migraine and tension-type headache, and UdH least. Burdens were greater in adolescents than children as UdH differentiated into adult headache types.

Conclusions

Headache in children and adolescents in Lithuania is mostly associated with modest symptom burden. However, the consequential burdens, in particular lost school days, are far from negligible for migraine (which is prevalent) and very heavy for pMOH (which, while uncommon in children, becomes four-fold more prevalent in adolescents). These findings are of importance to both health and educational policies in Lithuania.

The prevalence of headache disorders in children and adolescents in Ethiopia: a schools-based study

Background

The Global Burden of Disease (GBD) study establishes headache as the second-highest cause of disability worldwide. Because most headache data in GBD are from adults, leading to underestimation of headache-attributed burden, a global schools-based programme within the Global Campaign against Headache is contributing data from children (7–11 years) and adolescents (12–17 years). This national study in Ethiopia is the first in this programme reported from sub-Saharan Africa.

Methods

A cross-sectional survey following the generic protocol for the global study was conducted in six schools (urban and rural), in Addis Ababa city and three regions of Ethiopia. Structured questionnaires were self-completed under supervision by pupils within their classes. Headache diagnostic questions were based on ICHD-3 beta criteria but for the inclusion of undifferentiated headache (UdH).

Results

Of 2349 potential participants, 2344 completed the questionnaire (1011 children [43.1%], 1333 adolescents [56.9%]; 1157 males [49.4%], 1187 females [50.6%]), a participation proportion of 99.8%. Gender- and age-adjusted 1-year prevalence of headache was 72.8% (migraine: 38.6%; tension-type headache: 19.9%; UdH: 12.3%; all headache on ≥15 days/month: 1.2%; probable medication-overuse headache: 0.2%). Headache was more prevalent in females (76.2%) than males (71.0%), a finding reflected only in migraine among the headache types. Headache was more prevalent among adolescents (77.6%) than children (68.4%), reflected in all types except migraine, although prevalence of UdH fell sharply after age 14 years to 3.9%.

For headache overall, findings matched those in Turkey and Austria, obtained with the same questionnaire, but the high prevalence of migraine, not increasing with age, was surprising. The study highlighted diagnostic difficulties in young people, especially when poorly educated, with migraine diagnoses driven by improbably high proportions reporting nausea (44.8%) and vomiting (28.0%) as usual symptoms accompanying their headaches.

Conclusions

Headache is very common in children and adolescents in Ethiopia. This has major public-health implications, since half the country’s population are aged under 18 years.

The prevalence of headache disorders in children and adolescents in Mongolia: a nationwide schools-based study

BACKGROUND

The Global Campaign against Headache collects data from children (7-11 years) and adolescents (12-17 years) both to inform health and education policies and to contribute to the Global Burden of Disease (GBD) study. This survey in Mongolia was part of this global enquiry.

METHODS

Following the generic protocol for the global enquiry, this was a schools-based cross-sectional survey. Self-completed structured questionnaires were administered, within classes, in seven schools in four districts of the Capital city and three rural areas of Mongolia, selected to represent the country's diversities. Headache diagnostic questions were based on ICHD-3 criteria but for the inclusion of undifferentiated headache (UdH).

RESULTS

Of 4515 potential participants, 4266 completed the questionnaire (children 2241 [52.5%], adolescents 2025 [47.5%]; males 2107 [49.4%], females 2159 [50.6%]). Children were therefore slightly over-represented, although overall mean age was 11.3 ± 3.3 years (range: 6-17; median 11). The non-participation proportion was 4.5%. Observed lifetime prevalence of headache was 81.0%. Gender- and age-adjusted 1-year prevalence was 59.4% (migraine: 27.3%; tension-type headache [TTH]: 16.1%; UdH: 6.6%; all headache on ≥15 days/month: 4.2%; probable medication-overuse headache: 0.7%). All headache types except UdH were more prevalent among females than males, and all were more prevalent among adolescents than children, although UdH represented a higher proportion of all headache in children (13.0%) than in adolescents (10.0%). Headache yesterday was reported by 15.9% of the sample, 26.0% of those with headache.

CONCLUSIONS

At least in adolescents, headache in Mongolia is no less common than in adults. The clear difference from similar studies in other countries was a lower prevalence of UdH, perhaps a consequence of reporting bias in a non-troublesome headache (mild and short-lasting by definition). This study informs policy in Mongolia and, with no similar study yet from elsewhere in Western Pacific Region, makes an important contribution to the global enquiry.

The prevalence of headache disorders in children and adolescents in Lithuania: a schools-based study

BACKGROUND

While the Global Burden of Disease (GBD) study reports headache disorders as the second-highest cause of disability worldwide, the headache data in GBD come very largely from adults. This national study in Lithuania was part of a global schools-based programme within the Global Campaign against Headache contributing data from children (7-11 years) and adolescents (12-17 years).

METHODS

The methods followed the generic protocol for the global study. The basic study design was a cross-sectional survey. Self-completed structured questionnaires were administered, within classes, in 24 schools selected from seven regions of Lithuania to be nationally representative. Headache diagnostic questions were based on ICHD-3 beta criteria but for the inclusion of undifferentiated headache (UdH).

RESULTS

Of 3714 potential participants, 2505 (children 1382 [55.2%], adolescents 1123 [44.8%]; males 1169 [46.7%], females 1336 [53.3%]) completed the questionnaire. Adolescents and males were therefore relatively under-represented, with non-participation (32.6%) due in most cases to lack of parental consent. Observed lifetime prevalence of headache was 92.2%. Gender- and age-adjusted 1-year prevalence was 76.6% (migraine: 21.4%; tension-type headache [TTH]: 25.6%; UdH: 24.0%; all headache on ≥15 days/month: 3.9%; probable medication-overuse headache: 0.8%). All headache types except UdH were more prevalent among females than males, and among adolescents than children. UdH showed a complex relationship with age, but represented 38.0% of all reported headache in children, 27.4% in adolescents. Headache yesterday (HY) was reported by 17.5%, almost double the 9.8% predicted from prevalence and headache frequency to have headache on any day. The reason was unclear.

CONCLUSIONS

Findings were not very different from those reported in Turkey and Austria, but with more TTH. Headache has, therefore, again been shown to be common in children and adolescents, and UdH confirmed as a headache type that must be recognised and included in accounts of headache in these age groups.