Table 1.

Summary of demographic and socioeconomic characteristics in the groups with and without part-time job experience (N = 141,967).

Variable	Classification	Without Part-Time Job Experience (n = 124,802)	With Part-Time Job Experience (n = 17,165)	χ2	p
		% (SE)	% (SE)
Gender	Male	50.5 (0.8)	54.4 (1.2)	93.336	<0.001
	Female	49.5 (0.8)	45.6 (1.2)
Age (Years)	13	14.1 (0.2)	1.5 (0.1)	8246.856	<0.001
	14	15.5 (0.2)	3.4 (0.2)
	15	17.2 (0.2)	8.6 (0.3)
	16	18.1 (0.2)	19.5 (0.3)
	17	17.4 (0.2)	32.4 (0.4)
	18	17.7 (0.2)	34.7 (0.4)
School Type	Middle School	46.8 (0.5)	13.4 (0.4)	14,144.348	<0.001
	High School	47.6 (0.5)	57.6 (0.8)
	Vocational High School	5.6 (0.2)	29.0 (0.7)
Residential Area	Big City	45.0 (0.5)	36.7 (0.7)	683.185	<0.001
	Medium-Sized City	50.0 (0.5)	54.5 (0.9)
	Rural Area	5.0 (0.3)	8.8 (0.6)
Living Arrangement	With both Parents	91.3 (0.1)	83.2 (0.3)	118,660.848	<0.001
	With a Single Parent	7.8 (0.1)	14.9 (0.3)
	With Grandparent(s)/Other Relatives	0.9 (0.1)	2.0 (0.1)
	Other
Perceived Socioeconomic Status	High	43.3 (0.3)	29.6 (0.4)	2297.412	<0.001
	Middle	45.2 (0.2)	47.2 (0.4)
	Low	11.5 (0.1)	23.2 (0.4)
Academic Performance	High	44.5 (0.2)	26.5 (0.4)	3183.205	<0.001
	Middle	28.8 (0.1)	27.2 (0.3)
	Low	26.8 (0.1)	46.4 (0.4)
Father’s Educational Level	Below Middle School	2.1 (0.0)	4.8 (0.2)	3018.126	<0.001
	High School	30.7 (0.3)	48.9 (0.5)
	Above College	67.2 (0.3)	46.3 (0.5)
Mother’s Educational Level	Below Middle School	1.8 (0.0)	4.0 (0.2)	2548.592	<0.001
	High School	38.7 (0.3)	56.2 (0.4)
	Above College	59.5 (0.3)	39.8 (0.5)
Weekly Allowance	<50$	86.7 (0.1)	72.4 (0.4)	2679.599	<0.001
	50$–100$	9.6 (0.1)	17.4 (0.3)
	≥100$	3.7 (0.1)	10.2 (0.2)

SE: Standard error.