Table 1.

Descriptive statistic variables.

Norm	Assemble	Gender					Grade
				Male (n = 12,440)		Female (n = 18,035)		Freshman(n = 9,718)		Sophomore		Junior (n = 6,406)		Senior (2410)
										(n = 11,941)
		n	%	n	%	n	%	n	%	n	%	n	%	n	%
Physical activity level
	Low	23,643	77.6	7786	62.5	15857	87.9	7518	77.4	9235	77.3	5025	78.4	1865	77.4
	Middle	3986	13.1	2408	19.4	1578	8.8	1351	13.9	1587	13.3	738	11.6	310	12.9
	High	2846	9.3	2246	18.1	600	3.3	849	8.7	1,119	9.4	643	10	235	9.7
	χ2			2952.305				25.775
	p			<0.001				<0.001
	Cramer’s V			0.311				0.021
Self-rated health
	Terrible	867	2.8	463	3.7	404	2.2	239	2.5	351	2.9	186	2.9	91	3.8
	After a fashion	11139	36.6	4247	34.1	6892	38.2	3523	36.3	4526	37.9	2225	34.7	865	35.8
	Fine	10070	33.1	3784	30.4	6,286	34.8	3239	33.3	3999	33.5	2047	32	785	32.6
	Excellent	5405	17.7	2424	19.5	2981	16.5	1794	18.4	1993	16.7	1192	18.6	426	17.7
	Super	2994	9.8	1522	12.3	1472	8.3	923	9.5	1072	9	756	11.8	243	10.1
	χ2			294.695				76.992
	p			<0.001				<0.001
	Cramer’s V			0.098				0.029
Sleep quality
	Pretty good	13821	45.3	5931	47.7	7890	43.7	4780	49.2	5,258	44.1	2686	41.9	1097	45.5
	General	11,554	37.9	4339	34.9	7215	40	3652	37.6	4550	38.1	2505	39.1	847	35.1
	Poorly	5100	16.8	2170	17.4	2930	16.3	1,286	13.2	2133	17.8	1215	19	466	19.4
	χ2			82.387				169.414
	p			<0.001				<0.001
	Cramer’s V			0.052				0.053
Pressure rating
	Normalcy	15888	52.1	5931	47.7	9957	55.2	5566	57.3	5901	49.4	3250	50.7	1171	48.6
	Mildly	8880	29.1	3510	28.2	5370	29.8	2784	28.6	3629	30.4	1778	27.8	689	28.6
	Moderately	4352	14.3	2101	16.9	2251	12.5	1131	11.6	1786	15	1022	15.9	413	17.1
	Severe	1355	4.5			898	7.2	237	2.4	625	5.2	356	5.6	137	5.7
	χ2			549.805				294.585
	p			<0.001				<0.001
	Cramer’s V			0.134				0.057
Anxiety level
	Mildly	11024	36.2	4359	35.1	6665	36.9	3547	36.5	4112	34.4	2476	38.7	889	36.9
	Moderately	8491	27.9	2944	23.7	5547	30.8	3264	33.6	3138	26.3	1495	23.3	594	24.6
	Severe	7616	25	3191	25.6	4425	24.5	2247	23.1	3187	26.7	1599	25	583	24.2
	Very Serious	3344	10.9	1946	15.6	1398	7.8	660	6.8	1504	12.6	836	13	344	14.3
	χ2			561.824				463.129
	p			<0.001				<0.001
	Cramer’s V			0.136				0.071
Depression level
	Normalcy	6806	22.3	2680	21.6	4126	22.9	2258	23.2	2494	20.9	1491	23.3	563	23.4
	Mildly	9492	31.1	3300	26.5	6192	34.3	3639	37.4	3404	28.5	1814	28.3	635	26.3
	Moderately	10276	33.8	4202	33.8	6074	33.7	3050	31.4	4296	36	2125	33.2	805	33.4
	Severe	2807	9.2	1512	12.2	1,295	7.2	604	6.3	1218	10.2	692	10.8	293	12.2
	Very Serious	1094	3.6	746	5.9	348	1.9	167	1.7	529	4.4	284	4.4	114	4.7
	χ2			686.888			525.039
	p			<0.001			<0.001
	Cramer’s V			0.15			0.076