Table 2 Association between the frequency of PMS among the participants and their demographics (Chi-square test)

Age

.26

18–25 years

10,408 (72.6%)

3927 (27.4%)

25–30 years

3401 (74.4%)

1169 (25.6%)

30–35 years

2270 (72.8%)

846 (27.2%)

BMI

.000*

Underweight

776 (71.1%)

315 (28.9%)

Normal

9271 (72.3%)

3552 (27.7%)

Over-weight

4195 (73.9%)

1481 (26.1%)

Obese

1837 (75.6%)

594 (24.4%)

Country

.000*

Egypt

7977 (77.7%)

2287 (22.3%)

Jordan

3400 (72.9%)

1265 (27.1%)

Syria

4702 (66.3%)

2390 (33.7%)

Education level

.002*

Below College

1814 (71.5%)

724 (28.5%)

College degree

12,118 (72.9%)

4512 (27.1%)

above college degree

2147 (75.3%)

706 (24.7%)

Marital status

.46

Single or separated

12,187 (72.9%)

4532 (27.1%)

married

3892 (73.4%)

1410 (26.6%)

Job

.000*

Medical Job

4502 (76.1%)

1415 (23.9%)

Office Job

1131 (71.9%)

442 (28.1%)

Service Job

1211 (70.8%)

499 (29.2%)

Business owner

171 (71.8%)

67 (28.2%)

Student

6388 (72.3%)

2445 (27.7%)

Never worked before

2676 (71.4%)

1074 (28.6%)

Number of work hours

.16

Less than 20 h

3906 (73.7%)

1397 (26.3%)

20–40 h

6215 (73%)

2298 (27%)

40–60 h

1152 (73.8%)

409 (26.2%)

More than 60

244 (68.9%)

110 (31.3%)

No current job

4562 (72.5%)

1728 (27.5%)

Number of Pregnancies**

.76

Zero

965 (72.7%)

363 (27.3%)

1

1150 (74.8%)

387 (25.2%)

2

1131 (72.4%)

431 (27.6%)

Three or more

873 (74.2%)

303 (25.8%)

Number of births**

.16

Zero

1262 (71.9%)

494 (28.1%)

1

1158 (74.9%)

389 (25.1%)

2

1124 (73.3%)

409 (26.7%)

Three or more

558 (75%)

186 (25%)