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Volume 20, Number 4—April 2014

Research

Ciprofloxacin Resistance and Gonorrhea Incidence Rates in 17 Cities, United States, 1991–2006

Harrell W. ChessonComments to Author , Robert D. Kirkcaldy, Thomas L. Gift, Kwame Owusu-Edusei, and Hillard S. Weinstock
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Table 2

Results of regression analysis of gonorrhea incidence rates in 17 cities, United States, 1991–2006*

Independent variable Model 1 Model 2 Model 3 Model 4
Ciprofloxacin resistance 0.739 (0.172)† 0.710 (0.201)† 0.892 (0.322)† 0.926 (0.322)†
Lagged dependent variable 0.597 (0.052)† 0.553 (0.053)†
% Black −0.143 (0.962) 0.991 (1.67)
% 15–29 y of age −0.381 (1.20) −1.60 (2.49)
Robbery rate 0.247 (0.058)† 0.336 (0.125)†
Unemployment rate −0.660 (1.20) −0.724 (1.83)
Per capita income 0.449 (0.656) 0.324 (1.19)
Adjusted R2 0.969 0.970 0.967 0.967

*Values are coefficients (SEs) unless otherwise indicated. All of the above regressions also included a constant term and binary (dummy) variables for city and year (not reported in table). Models 1 and 2 included the lagged value of the dependent variable and were estimated by using ordinary least squares. Models 3 and 4 were estimated by using linear regression corrected for first-order autocorrelated errors. –, variables were not included in the regression.
†p<0.01.

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