We chose this model over other models with spatial components, such as a spatial lag model or geographic weighted regression, due to the non-random selection of sample locations.
In a Mantel correlogram, the geographic distance between observations is divided into lags, and Mantel statistics (including significance) are calculated for case pairs who fall within each lag.
The degree of spatial correlation can be used to predict the degree to which variables and their spatial lags are correlated across the geographic plane of the data.
Until donors and program architects (re)invest sufficient capital in family planning demand creation and supply of services, progress in sub-Saharan Africa will continue to lag behind improvements experienced in other geographic regions.
If a school or agency lags, thousands of individuals or families in geographic areas cannot avail themselves of strategies that might prevent school failure, substance abuse, mental illness, delinquency, or other ills.
Figure 1 presents the evolution of the longitudinal separation and time lag between Swarm spacecrafts when they pass the geographic equator during both periods.
Fig. 1 Evolution of the a longitudinal separation and b time lag between Swarm spacecrafts when they are passing the geographic equator during the early mission phase: December 09 , 2013 January 22 , 2014
If the lag and the rainfall coefficient vary across regions, meaningful geographic comparisons would be difficult to achieve because neither the lag nor coefficient have consistent meanings across models.
After establishment and possibly a lag phase, an invasive species disperses and expands its geographic range and increases in population sizes to the point of causing economic harm or ecological damage (Executive Presidential Order 1999; Sakai et al. 2001).
For three countries (Iceland, Finland, and Sweden), the lag time between antibiotic sales data and resistance rates was 0. Studies limited to small geographic areas not representative of a given country and studies limited to particular patient populations were excluded.
