Table II.
Composition of samples in each individual study and of the actual overall sample
| First author | ♂ | ♀ | Menstrual cycle phase | Average age | Manual dominance | Partecipants |
|---|---|---|---|---|---|---|
| Bingel, 2006 | 12 | 4 | Unknown | 24 | Right | Healthy |
| Craggs, 2008; Price, 2007 | 0 | 9 | Unknown or PMPa | 27.7 | Unknown | IBSb |
| Eippert, 2009a | 19 | 0 | 26.1 | Unknown | Healthy | |
| Kong, 2006 | 9 | 7 | Unknown | 28.4 | Right | Healthy |
| Lu, 2010 | 5 | 9 | Mid‐Proliferative | 23.9 | Right | FGIDc |
| Lui, 2010 | 13 | 18 | Unknown | 23.5 | Right (26), left (1) | Healthy |
| Nemoto, 2007 | Unknown | Unknown | 23 | Right | Healthy | |
| Petrovic, 2002 | 9 | 0 | Range 20–70 | Unknown | Healthy | |
| Wager [S1], 2004 | Unknown | Unknown | Unknown | Healthy | ||
| Wager [S2], 2004 | Unknown | Unknown | Right | Healthy | ||
| Watson, 2009 | 5 | 6 | 27.5 | Right | Healthy | |
| Subjects (N) | Gender | Menstrual cycle phase (N) | Average age | Manual dominance (N) | Health status (N) | |
| 199 | ♂ (72) | MPPd (9) | 28.18 (± 7.93) | Right (148); Left (1) | Healthy subjects (172) | |
| ♀ (62) | PMP (9) | Left‐Right (4) | FGID (9) | |||
| Unknown (65) | Unknown (44) | Unknown (46) | IBS (18) | |||
a
Premenopausal phase.
b
Irritable bowel syndrome.
c
Functional gastrointestinal disorders.