Table 4.

Prescriptions by number of antibiotics per prescription, 2009 and 2010

No. of antibiotics per prescription	Prescriptions, N (%) Δ		RD (95% CI)
	2009	2010
No antibiotics	5191(39.74)	5612(41.52)	+1.78 (+0.60, +2.96)
With antibiotics	7871(60.26)	7904(58.48)	−1.78 (−2.96, −0.60)
1	5450(41.72)	5403(39.97)	−1.75 (−3.28, −0.22)
2	2149(16.45)	2195(16.24)	−0.21 (−1.36, +0.94)
≥3	272(2.08)	306(2.26)	+0.18 (−0.27, +0.63)

Note: RD = the difference of proportion between the years; CI=confidence interval.

^Δ= There is statistically significant difference (p < 0.05) in proportion distributions of prescriptions by number of antibiotics between 2009 and 2010.