Correlation between pain frequency and the studied variables by divided gender
To investigate the relationship between the amount of sulfur amino acids and pain, spearman correlation was applied in Table 3 and 4. After adjusting for potential confounding variable included total energy intake, there was a significant relationship and weak correlation between age, weight, WC, WHtR and BMI and severity and frequency of MPs among women. Similarly, in men, there was just a positive and strong relationship between age and severity of pain (R = 0.36; P = 0.01). No positive relationship between any of the anthropometric indicators and strength and frequency of pain was seen. In addition there was no relationship between daily SAAs intake and severity of pain totally (P> 0.05). Finally, the relationship between age, WC, WHtR and BMI with pain intensity and age, WHtR, BMI and pain frequency was statistically significant.