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. 2020 Jul 20;22(7):e19982. doi: 10.2196/19982

Table 2.

Factors associated with mass media and social media exposure (N=2086).

Variable Univariate analysis (mass media exposure
score 20-24 vs 0-19a)
Multivariable logistic regression (mass media exposure
score 20-24 vs
0-19a)
Univariate analysis (social media
exposure
score 23-30 vs 0-22b)
Multivariable logistic regression (social media exposure
score 23-30 vs
0-22b)

High score
(20-24)
(n=1113)
P value ORc (95%CI) High score (23-30)
(n=1096)
P value OR (95%CI)
Demographic characteristics

Age group (years)


18-20 615 (51.4)
d 625 (52.2)


21-22 397 (55.6) .10 377 (52.8) .92


23-29 101 (57.7)
94 (53.7)

Birthplace


Urban 402 (56.1) .08 395 (55.1) .09


Rural 711 (51.9)
701 (51.2)

Annual family income (CNY)


<50,000 503 (51.4)
497 (50.8)
Refe


50,000-120,000 421 (54.3) .19 404 (52.1) .048 1.01 (0.83-1.24)


>120,000 189 (56.8)
195 (58.6)
1.28 (0.98-1.66)

Year


1 338 (51.1)
Ref 338 (51.1)


2 234 (47.8)
0.94 (0.73-1.20) 239 (48.8) .07


3 345 (56.9) .001 1.30 (1.03-1.64)f 333 (55.0)


4 and postgraduate 196 (59.8)
1.31 (0.99-1.74) 186 (56.7)
Health Belief Model

Perceived susceptibility


Certainly no/probably no/probably yes 1056 (52.8)
Ref 1033 (51.6)
Ref


Certainly yes 57 (67.1) .01 1.1 (0.75-1.96) 63 (74.1) <.001 1.75 (1.05-2.93)

Perceived severity


Not at all/slightly serious/serious 524 (47.6) <.001 Ref 509 (46.2) <.001 Ref


Very serious 589 (59.8)
1.33 (1.10-1.60)g 587 (59.6)
1.41 (1.17-1.69)h

Perceived self-efficacy


Certainly no/probably no/probably yes 205 (35.3) <.001 Ref 199 (34.3) <.001 Ref


Certainly yes 908 (60.3)
2.03 (1.64-2.52)h 897 (59.6)
2.01 (1.67-2.58)h

Perceived control or intention to carry out preventive measures


Certainly no/probably no/probably yes 293 (49.9) .01 Ref 386 (49.0) .01 Ref


Certainly yes 720 (55.5)
1.29 (1.07-1.56)g 710 (54.7)
1.27 (1.05-1.53)f
Psychological and behavioral response

Emotional consequences


Scores 5-9 625 (62.3) <.001 1.51 (1.25-1.83)h 607 (60.5) <.001 1.50 (1.24-1.67)h


Scores 10-20 488 (45.1)
Ref 489 (45.2)
Ref

Barriers to carry out preventive measure


Scores 8-15 618 (62.7) <.001 1.5 (1.26-1.84)h 608 (61.7) <.001 1.39 (1.15-1.67)g


Scores 16-32 495 (45.0)
Ref 488 (44.4)
Ref
Anxiety level

State-Trait Anxiety Inventory


Score 20-43 731 (56.6) <.001 1.16 (0.96-1.40) 713 (55.2) .002 1.11 (0.90-1.34)


Score 44-80 382 (48.1)
Ref 383 (48.2)
Ref

aHosmer–Lemeshow test, chi-square: 4.749, P=.78; Nagelkerke R2=0.116.

bHosmer–Lemeshow test, chi-square: 16.804, P=.03; Nagelkerke R2=0.112.

cOR: odds ratio.

dNot applicable.

eRef: reference.

fP<.05.

gP<.01.

hP<.001.