Spatial accessibility evaluation and clustering analysis of primary healthcare within 15 min circles in a northern Chinese megacity.

Spatial analysis of primary healthcare accessibility using Moran’s I The Global Moran’s I for primary healthcare accessibility in Tianjin was 0.008, with a highly significant P value of 0, using inverse distance to define the distance threshold.

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The accessibility in suburban districts reflected a transition between the central urban and outer suburban areas, with a clear trend of decreasing accessibility as residential zones moved further from the urban core (see Fig. 3 ).

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