Table 7 Primary headaches versus missing working days, Akaki textile mill, Ethiopia, 2007
From: Prevalence and burden of primary headache in Akaki textile mill workers, Ethiopia
Category | Missing work days | Crude odds ratio | 95% confidence interval | X 2 | P value | |
|---|---|---|---|---|---|---|
No | % | |||||
Migraine | 41/68 | 60.3 | 6.3 | 3.2–12.3 | 29.4 | 0.000001 |
Migraine without aura | 29/51 | 56.9 | 3.7 | 1.9–7.3 | 13.9 | 0.0002 |
Migraine with aura | 11/16 | 68.8 | 4.8 | 1.6–14.5 | 7.3 | 0.007 |
Tension type | 22/108 | 20.4 | 0.2 | 0.10–0.40 | 23 | 0.000003 |
Infrequent episodic tension type | 7 | 17.9 | 0.34 | 012–0.81 | 5.3 | 0.02 |
Frequent episodic tension type | 11 | 23.4 | 0.48 | 0.22–1.02 | 3.0 | 0.08 |
Chronic tension type | 4 | 22.2 | 4.98 | 1.59–15.59 | 6.43 | 0.011 |
All primary headaches | 63/181 | 34.8 | 0.14 | 0.05–0.41 | 14.5 | 0.00014 |