Table 4.

Descriptive Statistics.

	n	Mean	Std. Deviation
Number of reports
Before	31	26.9355	59.53371
After		25.8387	57.98684
Signal strength using ROR
Before	31	29.2003	72.29670
After		37.1373	100.85342
Signal strength using PRR
Before	31	38.6842	104.31360
After		44.5129	121.97943

Note. ROR = reporting odds ratio; PRR = proportional reporting ratio.