Intention of nurses to receiving influenza vaccination before the 2013–14 season

Figures & data

Table 1. Demographics of respondents (total percentage in each group do not necessarily add up to 100 because of missing entries)

	Number	Percentage	Cramers'V
Gender: male	168	8.7	0.02
female	1763	91.3
Age: < 25	69	3.6	0.11
26–35	358	18.6
36–45	595	30.8
46–55	668	34.6
>56	239	12.4
Live alone: yes	161	8.5	0.04
no	1743	91.5
Working experience			0.11
< 1 yr	71	4.5
2–5 yr	152	9.7
6–10 yr	140	9.0
11–20 yr	293	18.8
> 21 yr	907	58.0
Qualification			0.02
registered nurse	1522	79.7
enrolled nurse	386	20.3
Work need to contact patients			0.07
none	170	9.0
rarely	151	8.0
sometimes	208	11.0
often	1353	72.0
Public or private sector: public clinics/hospitals	1598	83.9	0.04
private sector	307	16.1

† registered nurses have received 3 years' professional training in nursing prior to their confirmation as 'registered nurses'; enrolled nurses have received 2-years training before registration.

* p value for the Cramers'V was < 0.05.

Table 2. Possible factors associated with respondents' plan of receiving flu vaccine in the forthcoming season 2013–14

	Plan for vaccination in season of 2013–14
	Yes	No	Undecided	Cramer's V	Eta
Accepting vaccination in season of 2011–12	487/589(82.7%)	21/808(2.6%)	95/523(18.2%)	0.75	0.55
Accepting vaccination in season of 2012–13	528/591(89.3%)	8/809(1%)	83/444(15.7%)	0.83	0.62
Accepting H1N1pdm09 monovalent vaccination	253/586(43.2%)	54/808(6.7%)	104/525(19.8%)	0.34	0.23
Frequency of vaccination since working as nurse	—	—	—	0.59	0.58
History of vaccination as student nurse	84/586(14.3%)	77/791(9.7%)	82/522(15.7%)	0.09	0.09
Any influenza since January 2013
No	288(49)	459(58.4)	269(51.8)	0.07	0.06
Yes	299(50.9)	323(41.1)	243(46.8)
Lab confirmed flu	1(0.2)	4(0.5)	7(1.3)
Family members in same household with influenza since January 2013
No	236(42.4)	371(49.7)	216(43)	0.03	0.03
Yes	315(56.7)	368(49.3)	277(55.2)
Definite	5(0.9)	8(1.1)	9(1.8)
Unwell after past vaccination
No	187(32.4)	98(26.9)	100(24.4)	0.39	0.37
Mild	385(66.6)	200(54.9)	270(65.9)
Significant	6(1)	66(18.1)	40(9.8)

* p value for Cramers'V > 0.05 implying the Cramers'V value is insignificantly different from 0

^† Ranked (5 classes) responses are not shown individually, which were: never vaccinated, vaccinated less than every 2 years, almost every 2 years, almost yearly and yearly respectively. The Chi Square statistics were all <0.05.

Table 3. The relative strength of association between attitudes and risk perception with I) vaccination acceptance and II) history of influenza

	I) Plan for vaccination 2013–14		II) Symptoms of influenza since 2013
	Cramer's V	Eta	Cramer's V	Eta
Perceived risk of contracting influenza
a) I have high risk of influenza	0.2	0.2	0.15	0.2
b) Hong Kong has high chance of outbreak	0.1	0.1	0.1	0.03
c) Hong Kong has good preventive measures against influenza	0.06	0.08	0.06	0.02
Professional Attitudes
a) Hospital staff vaccination is an important form of infection control	0.34	0.23	0.08	0.06
b) Staff vaccination should be compulsory	0.37	0.3	0.06	0.04
c) Vaccination lower hospital outbreak risk	0.38	0.26	0.06	0.02
d) Hospital staff should set an example for vaccination	0.44	0.3	0.04	0.01
e) Vaccination rate among staff is relatively low	0.12	0.08	0.08	0.06
f) Hospital staff vaccination should be voluntary	0.19	0.18	0.05	0.02

The higher the Cramers'V the larger the relative strength of associations of the particular factors with (a) and (b).

* P value for Cramers'V > 0.05, implying the Cramers'V value was insignificantly different from 0.