Table 3 Univariate analysis comparing variables significantly associated with primary headache against healthy respondents
| Â | Healthy participants | Participants with primary headache | P value |
|---|---|---|---|
n (%) | n (%) | ||
| Â | 4519 | 519 | Â |
Sex | |||
 Male | 2241(49.6) | 125(24.1) | P < 0.001* |
 Female | 2278(50.4) | 394(75.9) | |
Age | |||
 60–69 | 2243(49.6) | 290(55.9) | P = 0.007* |
  ≥ 70 | 2276(50.4) | 229(44.1) | |
Education (years) | |||
  ≤ 5 | 3040(67.3) | 376(72.4) | P = .017* |
  > 5 | 1479(32.7) | 143(27.6) | |
Current smoker | |||
 Yes | 1338(29.6) | 86(16.6) | P < 0.001* |
 No | 3181(70.4) | 433(83.4) | |
Currently drinks alcohol | |||
 Yes | 1164(25.8) | 62(11.9) | P < 0.001* |
 No | 3355(74.2) | 457(88.1) | |
Widowed/separated | |||
 Yes | 791(17.5) | 79(15.2) | P = 0.033* |
 No | 3728(82.5) | 440(84.8) | |
Social activities | |||
 Yes | 793(17.5) | 29(5.6) | P < 0.001* |
 No | 3726(82.5) | 490(94.4) | |
Comorbidities | |||
 Hypertension | 1520(33.6) | 209(40.3) | P = 0.003* |
2999(66.4) | 310(59.7) | ||
 Diabetes mellitus | 337(7.5) | 55(10.6) | P = 0.011* |
4182(92.5) | 464(89.4) | ||
 Heart disease | 631(14) | 140(27) | P < 0.001* |
3888(86) | 379(73) | ||