Table 3.

Fluoroquinolone prescription data

Dosage (mg 1st 7 days)	Odds Ratio (OR)	95% CI	P for trend
Continuous measure (1000 mg change)	1.03	0.98–1.08	0.18
Quartiles
Q1 (0–3000mg)	1 (referent)
Q2 (3000–5000mg)	1.9	0.37–9.78	0.44
Q3 (5000–7000mg)	1.09	0.10–12.0	0.95
Q4 (>7000mg)	2.91	0.53–15.91	0.22
# of prescriptions
Continuous measure (per 1 Rx increase)	1.09	0.96–1.23	0.18
1	1 (referent)
2	1.9	0.42–8.51	0.40
3	2.73	0.50–14.90	0.25
4+	2.4	0.54,10.73	0.25

CI = confidence interval