Table 2: Unadjusted and adjusted associations between sociodemographic, health behavior and health related factors and PMS affective and somatic domains.

Unadjusted OR (95% CI) Adjusted OR (95% CI)
Age, years [21-29] vs. [17-21] 1.17 (0.98; 1.40) -
Body mass index (BMI), kg/m2 < 18.5

18.5 - 25

25 - 30

>= 30

1.00

1.29 (0.99; 1.69)

1.84 (1.32; 2.57)*

2.38 (1.52; 3.74)*

1.00

1.26 (0.96; 1.66)

1.56 (1.10; 2.20)*

1.92 (1.20; 3.06)*

Smoking status Smokers vs. non-smokers and ex-smokers 1.10 (0.89; 1.35) -
Age of menarche, years >= 12 vs. < 12 0.88 (0.73; 1.07) -
Family profile Dead (1 or both) vs. alive 1.93 (1.22; 3.06)* 1.57 (0.95; 2.58)
Mother education University vs. high school or below 0.93 (0.78; 1.12) -
Mother occupation Employed vs. housewife 1.03 (0.86; 1.25) -
Mother income/month None (housewife)

US$ < 2000

1.00

1.06 (0.86; 1.31)

-
US$ >= 2000 0.94 (0.67; 1.33)
Father education University vs. high school or below 0.94 (0.78; 1.13) -
Father occupation Employed vs. unemployed 0.59 (0.40; 0.87)*
Father income/month None (unemployed)

US$ < 2000

1.00

0.56 (0.37; 0.83)*

1.00

0.62 (0.40; 0.95)*

US$ >= 2000 0.63 (0.43; 0.94)* 0.65 (0.42; 0.99)*
Living conditions Dorms

With parents

Others

1.00

0.81 (0.65; 1.003)

1.01 (0.63; 1.63)

-
University Private vs. public 1.18 (0.98; 1.41) -
Major Sciences & Medical

Humanities & Business

Engineering

1.00

1.18 (0.96; 1.43)

0.89 (0.69; 1.13)

-
Exercise/week >= 3 times vs. < 3 times 0.90 (0.73; 1.11) -
Caffeine consumption None

1 cup/day

2-3 cups/day

>= 3 cups/day

1.00

1.34 (1.08; 1.67)*

1.96 (1.57; 2.46)*

5.42 (3.02; 9.72)*

1.00

1.39 (1.11; 1.73)*

1.86 (1.48; 2.35)*

3.81 (2.04; 7.12)*

Energy drink consumption None

1 drink/day

2-3 drinks/day

>= 3 drinks/day

1.00

0.93 (0.72; 1.20)

1.47 (0.81; 2.65)

3.21 (1.62; 6.36)*

1.00

0.83 (0.63; 1.08)

1.10 (0.59; 2.05)

1.21 (0.55; 2.66)

Calcium supplements Yes vs. No 1.14 (0.89; 1.46) -
Vitamin D supplements Yes vs. No 1.02 (0.82; 1.26) -
Contraceptive pills Yes vs. No 1.24 (0.97; 1.60) -
Medication used for Pain, Yes vs. No

Nausea, Yes vs. No

Vomiting, Yes vs. No

Sleeping pills, Yes vs. No

1.57 (1.32; 1.88)*

1.89 (1.47; 2.44)*

1.90 (1.43; 2.53)*

3.18 (1.88; 5.40)*

1.34 (1.11; 1.62)*

1.38 (1.00; 1.91)

1.14 (0.80; 1.64)

2.15 (1.23; 3.76)*

*P-values < 0.05.