Table 3 Predictors of latent class membership for Class 1 (21.8%), 3 (10.4%), and 4 (21.7%) to Class 2 (46.2%), RRR (95%CI)

Age

0.97 (0.93, 1.01)

0.99 (0.95, 1.04)

0.96 (0.93, 1.00)*

Male

1.08 (0.71, 1.65)

0.92 (0.54, 1.56)

0.76 (0.51, 1.15)

Married

0.88 (0.48, 1.65)

0.92 (0.43, 1.96)

2.07 (1.06, 4.04)*

Bachelor’s degree or higher

2.11 (1.30, 3.44)**

0.58 (0.32, 1.08)

1.28 (0.80, 2.06)

Senior or intermediate

0.52 (0.28, 0.97)*

1.16 (0.55, 2.45)

0.63 (0.36, 1.12)

Permanent staff

0.79 (0.45, 1.40)

1.76 (0.88, 3.52)

1.49 (0.88, 2.52)

Any management position

1.23 (0.62, 2.43)

1.36 (0.57, 3.23)

1.28 (0.68, 2.40)

Years practiced > 15

2.53 (1.22, 5.24)*

0.34 (0.12, 0.96)*

1.25 (0.61, 2.56)

Years serviced in this institution > 15

0.58 (0.33, 1.05)

1.92 (0.74, 5.01)

1.16 (0.64, 2.10)

Weekly working hours > 50

1.00 (0.67, 1.49)

1.15 (0.70, 1.90)

1.49 (1.03, 2.18)*

Monthly income > 5000

2.15 (1.16, 3.98)*

1.12 (0.52, 2.41)

1.82 (1.04, 3.19)*

The proportion of fixed income > 80%

1.04 (0.70, 1.54)

0.56 (0.33, 0.93)*

0.90 (0.62, 1.31)

IM

1.21 (0.80, 1.81)

1.12 (0.67, 1.89)

0.65 (0.46, 0.91)*

IDEN

1.12 (0.67, 1.88)

0.73 (0.37, 1.41)

1.96 (1.27,3.03)**

INTRO

0.81 (0.47, 1.41)

1.25 (0.61, 2.56)

1.03 (0.64, 1.65)

EXT-S

1.32 (0.78, 2.22)

0.93 (0.50, 1.76)

0.71 (0.46, 1.09)

EXT-E

0.66 (0.50, 0.86)**

0.89 (0.64, 1.23)

1.03 (0.79, 1.33)

Constant

0.84 (0.26, 2.68)

0.48 (0.13, 1.83)

0.65 (0.21, 2.05)