Table 2 The headache characteristics with subgroups stratification
From: Exploring the link between pediatric headaches and environmental noise exposure
| Â | Subgroups n(%) or mean(standard error) | P-value | |
|---|---|---|---|
Puberty | Prepuberty | ||
Total | 59 (47.2) | 66 (52.8) | Â |
Sex | Â | Â | 0.0117 |
 Boys | 32 (54.2) | 21 (31.8) |  |
 Girls | 27 (45.8) | 45 (68.2) |  |
Headache type |  |  | < 0.0001 |
 Migraine | 14 (23.7) | 43 (65.2) |  |
 Tension-type | 45 (76.3) | 23 (34.9) |  |
Lateralization | Â | Â | 0.1232 |
 Unilateral | 41 (69.5) | 37 (56.1) |  |
 Bilateral | 18 (30.5) | 29 (43.9) |  |
Family history of headache | Â | Â | 0.1347 |
 yes | 25 (42.4) | 25 (37.9) |  |
 no | 31 (52.5) | 41 (62.1) |  |
 N/A | 3 (5.1) | 0 (0.0) |  |
Response to painkiller | Â | Â | 0.1750 |
 yes | 32 (54.2) | 39 (59.1) |  |
 no | 24 (40.7) | 27 (40.9) |  |
 N/A | 3 (5.1) | 0 (0.0) |  |
Interference of daily activities | Â | Â | 0.1373 |
 Yes | 28 (47.5) | 31 (47.0) |  |
 No | 24 (40.7) | 33 (50.0) |  |
 N/A | 7 (11.9) | 2 (3.0) |  |
VASa | 6.51 (0.21) | 6.45 (0.16) | 0.0883 |
Durationb | 11.32 (1.55) | 10.06 (1.34) | 0.4818 |
Frequencyc | 4.16 (0.37) | 3.77 (0.30) | 0.2517 |