Table 1.

Physician characteristics across physician prescribing quintiles: Male sex (P = .003), older age (P < .001), and a greater number of years in practice (P < .001) were associated with greater opioid prescribing.

CHARACTERISTIC	LOWEST VOLUME QUINTILE (N = 1977)	SECOND-LOWEST VOLUME QUINTILE (N = 1978)	MIDDLE QUINTILE (N = 1980)	SECOND-HIGHEST VOLUME QUINTILE (N = 1979)	HIGHEST VOLUME QUINTILE (N = 1978)
Male sex, %	58	65	66	68	71
Mean age, y	48.4	47.0	47.1	49.0	50.5
Mean no. of years in practice	22.8	21.4	21.5	23.4	24.9
Mean no. of patients eligible for public drug plan coverage	343	374	404	433	424