Research Article

Use of a Food Frequency Questionnaire for the Estimation of Gut Microbiota Composition Based on Dietary Patterns and Its Association with Irritable Bowel Syndrome Symptoms in the Lebanese Adult Population: A Cross-Sectional Study

Table 1

Sociodemographic and health characteristics of the participants by gender (N = 388).

CharacteristicsTotal (N = 388)Male (N = 133)Female (N = 255)P value

Age in years32.62 (12.1)33.79 (13.74)32.01 (11.13)
Governorate of residence
 Akkar0 (0)0 (0)0 (0)0.002#
 Baalbek–Hermel3 (0.77)1 (0.75)2 (0.78)
 Beirut67 (17.27)33 (24.81)34 (13.33)
 Beqaa10 (2.58)2 (1.51)8 (3.14)
 Mount Lebanon280 (72.16)82 (61.65)198 (77.65)
 Nabatiyeh0 (0)0 (0)0 (0)
 North Lebanon26 (6.7)15 (11.28)11 (4.32)
 South Lebanon2 (0.52)0 (0)2 (0.78)
Ethnicity
 Middle Eastern290 (74.74)98 (73.68)192 (75.3)0.458#
 American Indian or Alaska Native0 (0)0 (0)0 (0)
 Asian33 (8.5)12 (9.02)21 (8.23)
 African American2 (0.52)0 (0)2 (0.78)
 Hispanic or Latino2 (0.52)2 (1.51)0 (0)
 Native Hawaiian or Pacific Islander1 (0.26)0 (0)1 (0.39)
 White60 (15.46)21 (15.79)39 (15.3)
Anthropometrics
 BMI (kg/m²)24.34 (4.16)26.14 (4.3)23.41 (3.76)<
BMI classification
 Underweight17 (4.38)6 (4.5)11 (4.31)<0.0001#
 Normal Weight224 (57.73)44 (33.1)180 (70.59)
 Overweight111 (28.61)64 (48.12)47 (18.43)
 Obese36 (9.28)19 (14.28)17 (6.67)
Smoking habits
 Tobacco cigarettes59 (15.2)31 (23.31)28 (10.98)<0.0001#
 Shisha67 (17.27)14 (10.53)53 (20.78)
 E-cigarettes mods53 (13.67)27 (20.29)26 (10.2)
 Dual smoker of any of the above20 (5.15)13 (9.77)7 (2.75)
 Not smoking189 (48.71)48 (36.1)141 (55.29)
Cardiovascular diseases
 Arrythmias3 (0.77)1 (0.75)2 (0.79)<0.0001#
 Atherosclerosis1 (0.26)1 (0.75)0 (0)
 Coronary heart disease3 (0.77)2 (1.5)1 (0.39)
 Heart failure0 (0)0 (0)0 (0)
 Hypertension21 (5.41)16 (12.03)5 (1.96)
 None360 (92.79)113 (84.97)247 (96.86)
Type 2 diabetes
 Yes8 (2.06)3 (2.25)5 (1.96)1
 No380 (97.94)130 (97.75)250 (98.04)
Irritable bowel syndrome symptoms
 Yes178 (45.88)39 (29.32)139 (54.51)<0.0001#
 No210 (54.12)94 (70.68)116 (45.49)

BMI, body mass index; numbers in bold indicate significant P values (<0.05).P value: independent t test. #P value: Pearson’s chi-square test and Fisher exact test with more than 20% of expected counts less than 5 (smoking habits, cardiovascular diseases, and type 2 diabetes).