Characteristic | Total Na | Percent of drivers holding phone to earb | Crude Odds Ratio (95% Confidence Limit)c | Adjusted Odds Ratio (95% Confidence Limit)c | P-valued | ||
---|---|---|---|---|---|---|---|
Hand-held phone ban in male drivers | Â | Â | Â | Â | Â | Â | <0.0001 |
 No | 106,969 | 4.9 | 1.00 | (Referent) | 1.00 | (Referent) |  |
 Yes | 45,615 | 2.4 | 0.50 | (0.43, 0.58) | 0.47 | (0.40, 0.55) |  |
Hand-held phone ban in female drivers | Â | Â | Â | Â | Â | Â | Â |
 No | 77,026 | 8.0 | 1.00 | (Referent) | 1.00 | (Referent) |  |
 Yes | 34,063 | 3.0 | 0.36 | (0.31, 0.43) | 0.34 | (0.28, 0.41) |  |