American Academy of Pediatrics

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TABLE 2

Descriptive Overview of the Analytic Sample by Survey Year

	2002	2009	2016	P
Female sex, %	54.3	56.0	66.1	<.001^a
Age, y, mean (SD)	44.1 (9.6)	47.1 (10.1)	49.0 (10.9)	2002 vs 2016: <.001^b; 2002 vs 2009: <.001^b
Hours worked per week, mean (SD)	43.9 (13.4)	42.9 (13.4)	41.9 (12.6)	2002 vs 2016: .01^b; 2002 vs 2009: .22^b
Practice area, %				.36^a
Suburban	43.5	43.6	49.3
Rural	14.0	15.1	13.9
Urban, inner city	16.7	18.1	13.9
Urban, not inner city	25.8	23.2	23.0
Practice setting, %				.006^a
Solo or 2-physician practice	18.2	20.0	12.4
Group practice or HMO	57.9	56.5	66.2
Medical school, hospital, clinic, or other	23.8	23.3	21.3
Analytic sample size, n	562	532	469

	2002	2009	2016	P
Female sex, %	54.3	56.0	66.1	<.001^a
Age, y, mean (SD)	44.1 (9.6)	47.1 (10.1)	49.0 (10.9)	2002 vs 2016: <.001^b; 2002 vs 2009: <.001^b
Hours worked per week, mean (SD)	43.9 (13.4)	42.9 (13.4)	41.9 (12.6)	2002 vs 2016: .01^b; 2002 vs 2009: .22^b
Practice area, %				.36^a
Suburban	43.5	43.6	49.3
Rural	14.0	15.1	13.9
Urban, inner city	16.7	18.1	13.9
Urban, not inner city	25.8	23.2	23.0
Practice setting, %				.006^a
Solo or 2-physician practice	18.2	20.0	12.4
Group practice or HMO	57.9	56.5	66.2
Medical school, hospital, clinic, or other	23.8	23.3	21.3
Analytic sample size, n	562	532	469

a

Results from the χ² test comparing distributions across survey years.

b

Results from the 2-tailed t test comparing means across survey years.