Table 2 Univariate analysis of demographic and socioeconomic risk factors affecting antigen and antibody positivity

Sampling site

Cannery

1.61 (498)

12.47 (497)

12.68 (497)

18.31 (497)

Clinic

2.33 (172)

1.46 (0.43–4.90)

10.06 (169)

0.78 (0.44–1.38)

7.10 (169)

0.53 (0.28–1.00)**

14.20 (169)

0.74 (0.45–1.20)

Age

(per year)

1.01 (0.96–1.06)

1.03(1.00–1.05)***

1.01 (0.99–1.03)

1.01 (1.00–1.03)*

Age group (years)

15–24

1.14 (88)

Ref

6.98 (86)

Ref

11.63 (86)

Ref

16.28 (86)

Ref

25–34

1.63 (123)

1.44 (0.13–16.11)

4.92 (122)

0.69 (0.21–2.22)

5.74 (122)

0.46 (0.17–1.27)*

8.20 (122)

0.46 (0.19–1.09)**

35–44

2.54 (197)

2.27 (0.26–19.68)

16.75 (197)

2.68 (1.08–6.67)***

13.71 (197)

1.21 (0.56–2.62)

22.34 (197)

1.48 (0.76–2.87)

45–54

1.94 (206)

1.72 (0.19–15.64)

12.68 (205)

1.94 (0.77–4.89)*

13.66 (205)

1.20 (0.56–2.60)

18.05 (205)

1.13 (0.58–2.22)

> 55

0 (56)

na

14.29 (56)

2.22 (0.73–6.79)*

5.36 (56)

0.43 (0.11–1.64)

17.86 (56)

1.11 (0.46–2.73)

Gender

Female

1.26 (398)

7.09 (395)

6.84 (395)

10.89 (395)

Male

2.83 (247)

2.30 (0.72–7.30)*

18.62 (247)

3.00 (1.82–4.95)****

17.81 (247)

2.95 (1.78–4.91)****

26.72 (247)

2.98 (1.95–4.56)****

Ethnicity

Non-Samoan

0 (16)

#

12.50 (16)

12.50 (16)

25.0 (16)

Samoan

1.90 (630)

na

11.80 (627)

0.94 (0.21–4.20)

11.32 (627)

0.89 (0.20–4.01)

17.07 (627)

0.62 (0.19–1.95)

SES quantile

Per decr. quantile

2.18 (0.90–5.01)**

1.28 (0.94–1.76)*

1.43 (1.03–1.99)***

1.44 (1.09–1.89)***

SES quantile (by group)

Low

2.59 (232)

##

14.29 (231)

1.63 (0.86–3.12)

13.85 (231)

2.21 (1.08–4.52)***

21.65 (231)

2.08 (1.17–3.68)***

Medium

2.38 (252)

na

11.20 (250)

1.24 (0.64–2.40)

11.60 (250)

1.80 (0.87–3.72)*

16.4 (250)

1.48 (0.82–2.65)*

High

0 (162)

9.26 (162)

Ref

6.79 (162)

Ref

11.73 (162)

Ref

Persons per house

Per person

0.93 (0.75–1.15)

1.03 (0.96–1.11)

0.97 (0.89–1.05)

1.04 (0.98–1.11)

Education

Snr 2ndary or higher

2.07 (580)

#

10.92 (577)

10.75 (577)

16.46 (577)

< Snr 2ndary

0 (64)

na

17.19 (64)

1.69 (0.84–3.41)*

12.50 (64)

1.19 (0.54–2.60)

20.31 (64)

1.29 (0.68–2.47)

Work location

Indoor

1.69 (534)

#

11.63 (533)

11.07 (533)

16.7 (533)

Outdoor or mixed

0 (38)

na

18.42 (38)

1.72 (0.72–4.06)

18.42 (38)

1.81 (0.76–4.30)*

26.32 (38)

1.78 (0.84–3.80)*