Table 2

Unadjusted and adjusted NBCSP return rates, average monthly FOBT kits returned for analysis, and rate ratios associated with the Cancer Council Australia bowel cancer screening campaign, in Queensland and Western Australia from January 2012 to December 2014

Unadjusted monthly return rate %
Unadjusted average monthly kit returns†
(invitations‡)
aAdjusted§ return rate % (95% CI)
Adjusted§ kit returns (95% CI)
Adjusted§ rate ratio associated with the CCA campaign (95% CI)
QLDWAQLDWA
Non-campaign months34.8% 
6243 
(17 919)
39.1% 
3595 
(9203)
34.3% (31.3% to 37.7%)
6631 (6372 to 6890)
1
38.6% (35.3% to 42.2%)
3805 (3638 to 3973)
1
CCA campaign months¶38.1% 
11 057 
(29 000)
39.5% 
5883 
(14 894)
41.2% (35.5% to 47.7%)
7945 (7035 to 8855)
1.20 (1.06 to 1.35)**
42.7% (37.2% to 49.2%)
4213 (3773 to 4652)
1.11 (0.99 to 1.24)*
  • *P<0.10, **P<0.01.

  • †Average monthly FOBT kits returned and analysed.

  • ‡Average monthly number of people invited to screen over the current and past 3 months.

  • §Adjusted for seasonality and Jodi Lee Campaign (September to November 2014).

  • ¶Campaigns months=June, July, August, September 2014 (months the CCA campaign was on air plus 2 additional months after campaign end).

  • FOBT, faecal occult blood test; QLD, Queensland; WA, Western Australia.