Table 2.
Characteristics of matched PCTs (n = 42 pairs)
| Exposed PCTs | Unexposed PCTs | P value | |
|---|---|---|---|
| eligible PCT population | |||
| average | 41,267 | 46,883 | 0.38 |
| smallest | 15,600 | 18,200 | |
| largest | 86,000 | 152,000 | |
| Ave. proportion of females 15-19 | 24.2% | 24.1% | 0.93 |
| Ave. proportion of females 20-24 | 24.4% | 24.5% | 0.93 |
| Ave. proportion of males 15-19 | 25.6% | 25.6% | 0.94 |
| Ave. proportion of males 20-24 | 25.8% | 25.8% | 0.95 |
| IMD* rank (of 152 PCTs) | |||
| average | 80 | 76 | 0.61 |
| worst | 7 | 6 | |
| best | 130 | 149 | |
| Average screens in the quarter before incentive | |||
| Number | 954 | 1,040 | 0.63 |
| Range | 11 - 2793 | 22 - 4497 | |
| Rate (per population of 15-24 olds) | 2.37% | 2.29% | 0.77 |
| Year screening programme established | |||
| 2003-2005 | 15 | 9 | |
| 2005-2007 | 5 | 18 | |
| 2007-2008 | 22 | 15 | 0.01 |
| Number of PCTs with mail-outs | |||
| Any mail-out 2007-2009 | 15 | 15 | 1.00 |
| Mail-outs during incentive | 11 | 8 | 0.43 |
*IMD (index of multiple deprivations) is a composite area deprivation index commonly used by the Office of National Statistics and other authorities in the UK. It currently consists of seven domains, measuring income, employment, health, education, environment, crime and housing in a small area
P values were calculated for differences between exposed and unexposed PCTs using t-test for continuous variables and χ2 tests for proportions