Table 7.

Correlations between fluid intake and urination behavior at night.

	TFI		Fluid intake frequency		Fluid intake in afternoon		Fluid intake frequency in afternoon		Fluid intake in night		Fluid intake frequency in night
	r	p	r	p	r	p	r	p	r	p	r	p
Urination frequency	17.084	<0.001*	27.071	<0.001*	4.630	0.032*	6.008	0.015*	34.242	<0.001*	67.360	<0.001*
≥1 Na	0.114	0.009*	0.091	0.038*	0.069	0.113	0.041	0.354	0.146	<0.001*	0.331	<0.001*

Spearman’s correlation coefficients were used to analyze the correlations among urination frequency and fluid intake behaviors. Point biserial correlations were used to analyze the correlations among fluid intake behaviors and night urination. ^aValue means the participants who have urination at night (Once participants engaged in urination at night, they were included in the “≥1” group, otherwise they were not). ^*Means that there were statistically significant correlations, as the value of p was less than 0.05. TFI: total fluid intake.