# Table 2 Comparisons of differences between the two time points of measurement

Variablea 1997 (N = 281)c 2001(N = 246)c
Mean SD Mean SD Sig. tests P-value
% with Managed Care Involvementb 77.07% (266) - 73.73% (217)   z = -.659 n.s.
% using Practice Guidelinesb 66.65% (278) - 75.33%
(223)
- z = 1.852 p < .10
% using Practice ASAMb 44.96% (278) - 43.94% (217) - z = -.133 n.s
% of Staff in Recoveryc 32.00% (266) 30.11 27.30% (221) 29.27 F(1,486) = 2.98 n.s.
Counseling Services (Number of) 4.93 (278) 1.52 5.17 (223) 1.38 F(1,499) = 3.18 n.s.
Medication Services (Number of) 0.49 (278) 0.99 2.82 (223) 1.94 F(1,499) = 302.58 p < .0001
Medical Services (Number of) 0.51 (278) 1.31 2.54 (223) 1.21 F(1,499) = 509.03 p < .0001
Ancillary Services (Number of) 0.54 (278) 0.94 0.69 (223) 0.89 F(1,499) = 3.48 n.s.
Clients served per week 119.00 (272) 238.03 189.80 (221) 925.36 F(1,490) = 1.47 n.s.
1. aValue in parentheses is the n for each variable.
2. bThis designates a binomial variable. The percentage is the number of clinics that have this characteristic. Test statistic used was a z test of two proportions.
3. cThis is a mean of the percent of staff in recovery for each clinic.