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. 2021 Dec 18;22(1):153. doi: 10.1186/s10194-021-01362-z

Table 2.

Lost productive time attributed to migraine by country (values are population means ± SEM [median])

Country Lost productive time (days/3 months per person)
HALT question(s)1
1 2 1 + 2 3 + 4 1 + 2 + 3 + 4
China 2.4 ± 0.4 [0.0] 4.1 ± 0.5 [2.0] 6.5 ± 0.7 [3.0] 7.7 ± 0.8 [4.0] 14.0 ± 1.4 [8.0]
Ethiopia 1.2 ± 0.1 [0.0] 1.4 ± 0.1 [0.0] 2.7 ± 0.2 [0.0] 4.3 ± 0.4 [0.0] 6.2 ± 0.4 [4.0]
India 1.1 ± 0.1 [0.0] 0.6 ± 0.1 [0.0] 1.7 ± 0.2 [0.0] 2.8 ± 0.2 [1.0] 4.4 ± 0.3 [3.0]
Lithuania + Luxembourg 0.9 ± 0.3 [0.0] 1.9 ± 0.2 [0.0] 2.7 ± 0.3 [0.0] 4.5 ± 0.4 [2.0] 6.8 ± 0.5 [2.0]
Nepal 1.2 ± 0.1 [0.0] 0.8 ± 0.1 [0.0] 2.0 ± 0.2 [0.0] 3.6 ± 0.3 [1.0] 5.6 ± 0.4 [3.0]
Pakistan 3.3 ± 0.2 [2.0] 4.8 ± 0.3 [3.0] 8.1 ± 0.4 [6.0] 11.2 ± 0.4 [10.0] 13.9 ± 0.4 [12.0]
Russia 0.2 ± 0.1 [0.0] 2.0 ± 0.3 [0.0] 2.2 ± 0.3 [0.0] 3.9 ± 0.4 [3.0] 6.2 ± 0.7 [4.0]
Spain 1.4 ± 0.2 [0.0] 4.4 ± 0.3 [2.0] 5.6 ± 0.4 [3.0] 7.3 ± 0.5 [3.0] 12.3 ± 0.8 [6.0]

HALT: Headache-Attributed Lost Time questionnaire. 1 Questions 1 and 2 relate to work time (absenteeism and presenteeism respectively); questions 3 and 4 relate to household work (days with nothing or less than half of normal achieved) (see text).