Table 5.

Subgroup analyses by job qualification status for the association between BMI and job quality using conditional logistic regression or fixed-effects ordinary least squares.

Key Independent Variables	Odds Ratio b (90% Confidence Interval):			Regression Coefficient b (Standard Error):
	Employed	Permanent	Bonus	Labor Union	Wage
MEN WITH AT THE LEAST ONE QUALIFICATIONc
BMI group
Underweight †	1.196	1.573	0.486	0.445	0.061
	(0.65, 2.21)	(0.40, 6.25)	(0.18, 1.26)	(0.12, 1.62)	(0.157)
Overweight & Obese †	0.988	1.110	1.144	0.624 **	0.087
	(0.81, 1.21)	(0.77, 1.60)	(0.87, 1.50)	(0.46, 0.85)	(0.067)
N	1912	920	920	920	920
MEN WITHOUT ANY QUALIFICATION c
BMI group
Underweight †	0.896	2.003	0.854	0.479	−0.030
	(0.59, 1.37)	(0.80, 5.03)	(0.46, 1.60)	(0.17, 1.34)	(0.127)
Overweight & Obese †	0.813 **	1.316	0.899	0.597 **	0.196 ***
	(0.69, 0.95)	(0.96, 1.81)	(0.70, 1.16)	(0.42, 0.84)	(0.065)
N	2802	1039	1039	1039	1039
WOMEN WITH AT THE LEAST ONE QUALIFICATIONc
BMI group
Underweight †	0.772 **	1.573	1.082	1.313	−0.038
	(0.62, 0.96)	(0.40, 6.25)	(0.85, 1.37)	(0.98, 1.77)	(0.083)
Overweight & Obese †	1.082	1.110	0.581	0.290	−0.076
	(0.65, 1.79)	(0.77, 1.60)	(0.36, 0.94)	(0.11, 1.79)	(0.072)
N	1881	1249	1249	1249	1249
WOMEN WITHOUT ANY QUALIFICATION c
BMI group
Underweight †	1.015	0.656 **	0.873	1.359	0.109 ***
	(0.83, 1.24)	(0.47, 0.92)	(0.68, 1.13)	(0.99, 1.87)	(0.039)
Overweight & Obese †	0.741	0.352 **	0.332 ***	0.871	−0.033
	(0.49, 1.13)	(0.18, 0.68)	(0.18, 0.61)	(0.38, 1.98)	(0.071)
N	1745	977	977	977	977

^† BMI groups include underweight (BMI < 25), overweight or obese (BMI ≥ 25), normal weight (18.5 < BMI ≤ 25) as references. ^b ** p-value < 0.05, *** for p-value < 0.01. ^c The following three qualifications were considered: having any certificates, job training, or internship.