Table 2.

Comparison of Baseline Demographics Before and After Propensity Score Stratification in Both Groups

	Before Stratification				After Stratification
Characteristic	Mental Disorder % (n = 255)	Nonmental Disorder % (n = 559)	${\chi }_{\left(df\right)}^2$	p Valuea	Mental Disorder % (n = 236)	Nonmental Disorder % (n = 545)	${\chi }_{\left(df\right)}^2$	p Valuea
Age group			45.07(7)	<0.0001			5.90(7)	0.5509
65–69	18.9	32.9			30.0	30.7
70–74	18.1	24.8			19.2	19
75–79	24.1	22.3			21.4	25.4
80–84	19.6	12.7			19.5	18.4
85–89	14.1	4.7			4.5	3
90–94	4.1	2.5			3.9	3.4
95–99	0.7	0.2			1.0	0.2
100–104	0.4	0			0.5	0
Sex: female	57.4	48	5.49(1)	0.0192	51.7	53.9	0.21(1)	0.6498

Bold type indicates statistical significance.

^aχ² tests was performed.