Table 4.

The effect of ethnic on menopausal symptom score, a cross-sectional study in China

Factor (reference)	Probability of an event	Estimate	Standard error	Wald Chi-square	P value	OR (95% CI)
Ethnic (Han)	Pr (Severe)	0.8271	0.1192	48.1804	< 0.0001	2.29 (1.81–2.89)
Ethnic (Han)	Pr (≥ moderate)	0.4379	0.0876	24.9741	< 0.0001	1.55 (1.30–1.84)
Ethnic (Han)	Pr (≥ mild)	0.1947	0.1086	3.2139	0.0730	1.21 (0.98–1.50)

As ethnic does not satisfy the proportional odds assumption, we hereby creates different parameters for ethinic in each response function, that is, ethnic has unequal slopes across the response functions. OR: odds ratio; CI: confidence interval