Table 2.

Multiple linear regression analysis on factors associated with knowledge score

Variable	Coefficient (β)	Standard error	t	P-value
Gender
Female	0
Male	−0.061	0.044	−1.38	0.169
Age (years)
>60	0
18–40	0.185	0.118	1.56	0.118
41–60	0.398	0.117	3.41	<0.001
Place of residence
Rural	0
Urban	0.302	0.138	2.19	0.003
Marital status
Unmarried	0
Married	0.032	0.056	0.57	0.570
Divorced	−0.212	0.139	−1.52	0.127
Widowed	−0.153	0.276	−0.56	0.579
Education level
High school or below	0
College or undergraduate	0.535	0.079	6.78	<0.001
Master or above	0.813	0.091	8.92	<0.001
Profession
Non-medical	0
Medical	0.684	0.046	14.705	<0.001
No profession	−0.108	0.071	−1.532	0.1270
Monthly income (CNY)
≤5000	0
5000–10000	0.103	0.051	2.01	0.045
≥10000	0.063	0.065	0.97	0.333
Health condition
Poor	0
Good	0.423	0.193	2.19	0.029
General	0.383	0.194	1.97	0.048
Infected by influenza last year*
No	0
Yes	−0.149	0.061	−2.432	0.0149
Unknown	−0.572	0.097	−5.138	<0.001
Received influenza vaccination last year*
No	0
Yes	0.564	0.058	9.734	<0.001
Unknown	−0.520	0.109	−4.745	<0.001

CNY: Chinese Yuan; *participants or their family members.