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Table 2 Number of destinations and number of destinations per day estimated by the parameter setting eps1 = 200 m, eps2 = 20 min and minpts = 10 of the ST-DBSCAN algorithm

From: The spatiotemporal movement of patients in and out of a psychiatric hospital: an observational GPS study

  Inpatients Outpatients p value All
(n = 53) (n = 31) (inpatients versus outpatients) (n = 84)
Total number of destinations 2041 (100.0%) 1728 (100.0%)   3769 (100.0%)
 at home 139 (6.8%) 345 (20.0%) < 0.001 484 (12.8%)
 at hospital 932 (45.7%) 14 (0.8%)   946 (25.1%)
 at other location 726 (35.6%) 996 (57.6%)   1722 (45.7%)
 in transit 135 (6.6%) 152 (8.8%)   287 (7.6%)
 location uncleara 109 (5.3%) 221 (12.8%)   330 (8.8%)
Average number of destinations per patient and dayb 8.2 (4.5) 8.6 (6.0)   8.4 (5.2)
8 (5–10) 8 (4–12) 0.935 8 (5–11)
 at homeb 0.6 (1.3) 1.7 (1.9)   1.1 (1.7)
0 (0–0) 1 (0–3) < 0.001 0 (0–2)
 at hospitalb 3.8 (3.2) 0.1 (0.3)   2.1 (3.0)
3 (1–6) 0 (0–0) < 0.001 0 (0–4)
 at other locationb 2.9 (4.0) 5.0 (5.6)   3.8 (4.9)
2 (0–4) 3 (0–8) < 0.001 2 (0–6)
 in transitb 0.5 (0.5) 0.8 (0.4)   0.6 (0.5)
1 (0–1) 1 (1–1) < 0.001 1 (0–1)
 location uncleara,b 0.4 (1.8) 1.1 (3.0)   0.7 (2.4)
0 (0–0) 0 (0–0) 0.002 0 (0–0)
Summed activity area (sum of all individual cluster areas) (km2) 15.1 (83.9) 106.4 (496.3)   55.8 (340.0)
0.30 (0.04–2.36) 2.12 (0.25–10.14) < 0.001 0.69 (0.06–3.72)
Percent time within a cluster with respect to the recorde total time
 at homeb 7.3 (14.4) 29.6 (31.0)   15.5 (24.4)
0.0 (0.0–6.6) 31.2 (0.0–57.8) < 0.001 0.0 (0.0–30.4)
 at Hospitalb 45.9 (28.2) 0.6 (2.1)   29.2 (31.4)
43.1 (22.1–71.2) 0.0 (0.0–0.0) < 0.001 16.5 (0.0–56.5)
 at other locationb 22.3 (20.0) 22.1 (23.8)   22.2 (21.3)
18.3 (3.7–33.6) 13.0 (0.0–43.5) 0.586 17.6 (3.2–37.0)
 in transitb 20.0 (18.6) 26.6 (16.9)   22.4 (18.2)
16.1 (2.7–30.6) 25.7 (14.3–41.3) 0.058 20.2 (5.1–32.6)
 location uncleara,b 4.6 (16.1) 21.1 (37.0)   10.7 (26.9)
0.0 (0.0–0.0) 0.0 (0.0–55.1) 0.084 0.0 (0.0–0.0)
  1. a Locations unclear since home address not known and cluster status therefore not unequivocally attributable
  2. b Statistics denote mean (SD) at first row, and median (25. – 75. percentile) at second row