Table 1.
Distribution of the 110 nummular headache cases based on age and gender
| Author; country; year | Number of cases | Age (years) | Gender |
| Liu and Wei; China; 201824 | 3 | 74 | F |
| 46 | M | ||
| 38 | F | ||
| Rodríguez et al; Spain; 20158 | 1 | 14 | F |
| Camacho-Velasquez; Spain; 201625 | 1 | 47 | M |
| Barón et al; Spain; 201526 | 1 | 21 | F |
| López-Ruiz et al; Spain; 201427 | 2 | 67 | M |
| 60 | M | ||
| Iwanowski et al; Poland; 201428 | 1 | 61 | F |
| Kurian and Solomon; USA; 201429 | 2 | 47 | F |
| 49 | F | ||
| López-Mesonero et al; Spain; 201430 | 1 | 41 | F |
| Mulero et al; Spain; 201331 | 3 | 21 | M |
| 45 | M | ||
| 35 | M | ||
| Yin et al; Italy; 201332 | 1 | 52 | M |
| Irimia et al; Spain; 201333 | 1 | 33 | F |
| Danno et al; Japan; 201334 | 3 | 71 | M |
| 57 | F | ||
| 39 | M | ||
| Dai et al; China; 20136 | 1 | 63 | M |
| Herrero-Velázquez et al; Spain; 201335 | 8 | 46 | M |
| 60 | F | ||
| 23 | F | ||
| 43 | M | ||
| 53 | F | ||
| 33 | M | ||
| 54 | F | ||
| 42 | F | ||
| Başağrisi et al; China; 201036 | 1 | 59 | M |
| Yamazaki and Kobatake; Japan; 201137 | 1 | 28 | M |
| Rocha-Filho; Brazil; 201138 | 1 | 52 | M |
| Porta-Etessam et al; Japan; 201039 | 1 | 52 | F |
| Chen et al; Taiwan; 201540 | 1 | 62 | M |
| Guerrero Ángel et al; Spain; 201141 | 6 | 61 | M |
| 71 | F | ||
| 80 | F | ||
| 30 | F | ||
| 33 | M | ||
| 32 | F | ||
| Campbel and Sartori; USA; 201342 | 1 | 47 | F |
| Evans and Pareja; Spain; 200511 | 1 | 57 | F |
| Trucco et al; Italy; 200610 | 1 | 55 | F |
| Evan et al; Spain; 200643 | 1 | 45 | F |
| Trucco et al; Italy; 200744 | 1 | 26 | F |
| Guillem et al; USA; 200745 | 1 | 60 | F |
| Tayeb et al; USA; 200846 | 1 | 47 | M |
| Pareja et al; Spain; 200847 | 5 | 65 | F |
| 50 | F | ||
| 61 | F | ||
| 60 | M | ||
| 34 | F | ||
| Mathew et al; USA; 20089 | 4 | 43 | F |
| 58 | F | ||
| 35 | F | ||
| 47 | F | ||
| Baldacci et al; Italy; 201048 | 1 | 40 | M |
| Dach et al; Spain; 200649 | 3 | 41 | F |
| 29 | M | ||
| 64 | M | ||
| Robbins and Grosberg; USA; 201350 | 1 | 40 | F |
| Alvaro et al; Spain; 200951 | 4 | 67 | M |
| 72 | F | ||
| 50 | F | ||
| 37 | F | ||
| Cuadrado et al; Spain; 200952 | 3 | 28 | M |
| 67 | F | ||
| 51 | M | ||
| Dabscheck and Ian Andrews; Australia; 201053 | 1 | 4 | M |
| Dusitanond et al; USA; 200854 | 5 | 24 | F |
| 30 | F | ||
| 47 | F | ||
| 55 | F | ||
| 59 | F | ||
| Ruscheweyh et al; Germany; 200955 | 6 | 25 | F |
| 39 | M | ||
| 39 | F | ||
| 49 | M | ||
| 24 | M | ||
| 57 | F | ||
| Jiang et al; China; 201956 | 2 | 48 | F |
| 72 | M | ||
| Grosberg et al; USA; 200718 | 1 | 55 | M |
| Pareja et al; Spain; 20043* | 14 | 38 (mean) | 3—Male |
| 11—Female | |||
| Pareja et al; Spain; 20022* | 13 | 50 (mean) | 5—Male |
| 8—Female |
*The data from these studies have considered for the analysis of demographic and headache characteristics but have not considered for analysis of treatment effectiveness due to missing accurate treatment.