Table 2

Comparison of health service utilization of women interested and not interested in participating in a randomized PHT preventive trial in Estonia, proportion (%) of women, and age-adjusted odds-ratios (OR).1)


Interested
Non-interested
OR (95% CI)1)

(n = 225)
(n = 553)


%
%


Physician visit in past year
76
68
1.53 (1.06–2.20)
Gynaecologist visit in past year
53
39
1.40 (1.01–1.94)
Used calcium drugs in last 2 weeks
32
23
1.49 (1.04–2.13)
Used PHT at some time 2)
26
11
2.62 (1.58–4.35)
Used PHT at some time 3)
16
8
2.05 (1.26–3.35)

1) Reference group: non-interested

2) Excluding missing values, interested n = 90 (40%), non-interested n = 143 (26%), see Methods

3) Including missing values in the denominator

Hovi et al. BMC Medical Research Methodology 2005 5:12   doi:10.1186/1471-2288-5-12