Table 3 Results of the sensitivity analysis using multivariate logistic regression models with a sample size N = 487

Happiness – Happy

Reference

Happiness - Unhappy

5.1 (1.7, 15.7)

0.004

Age (linear)

0.5 (0.3, 1.0)^a

0.060

BMI (linear)

1.7 (1.1, 2.5)^a

0.021

Gender = Males

Reference

Gender = Females

1.6 (0.9, 3.0)

0.154

Sleep = 7

Reference

Sleep < 6

2.6 (1.0, 6.4)

0.040

Sleep = 6

0.9 (0.3, 2.6)

0.887

Sleep = 8

0.9 (0.3, 2.4)

0.779

Sleep > 8

1.1 (0.3, 3.7)

0.853

Married

Reference

Single

0.9 (0.4, 2.1)

0.885

Others

0.7 (0.2, 2.9)

0.597