Table 1 Descriptive statistics
From: Situational crime prevention and worldwide piracy: a cross-continent analysis
Variables | n | % |
|---|---|---|
Dependent variable: unsuccessful attack | ||
 Yes (1) | 2351 | 49.4 |
 No (0) | 2404 | 50.6 |
Independent variables | ||
 Increase perceived risk variables | ||
  Increased Risk Index | ||
   0 | 2180 | 47.9 |
   1 | 1237 | 27.2 |
   2 | 1051 | 23.1 |
   3 | 87 | 1.9 |
  Alarm raised | ||
   Yes (1) | 1917 | 39.7 |
   No (0) | 2913 | 60.3 |
  Watchman present | ||
   Yes (1) | 1241 | 25.7 |
   No (0) | 3589 | 74.3 |
  Anti-piracy watch | ||
   Yes (1) | 307 | 6.4 |
   No (0) | 4520 | 93.6 |
  Private security | ||
   Yes (1) | 265 | 5.5 |
   No (0) | 4565 | 94.5 |
  Increased lighting | ||
   Yes (1) | 206 | 4.3 |
   No (0) | 4622 | 95.7 |
 Increase perceived effort variables | ||
  Increased Effort Index | ||
   0 | 3207 | 70.4 |
   1 | 939 | 20.6 |
   2 | 345 | 7.6 |
   3 | 62 | 1.4 |
   4 | 1 | 0.0 |
  Evasive maneuvers | ||
   Yes (1) | 667 | 13.8 |
   No (0) | 4161 | 86.2 |
  Crew mustered | ||
   Yes (1) | 801 | 16.5 |
   No (0) | 4068 | 83.5 |
  Vessel increase speed | ||
   Yes (1) | 410 | 8.5 |
   No (0) | 4414 | 91.5 |
  Electric perimeter fence | ||
   Yes (1) | 24 | 0.5 |
   No (0) | 4844 | 99.5 |
Control variables | n | % |
|---|---|---|
Time | ||
 00:00–05:59 | 1964 | 48.6 |
 06:00–11:59 | 680 | 16.8 |
 12:00–17:59 | 533 | 13.2 |
 18:00–23:59 | 867 | 21.4 |
Quarter of the year | ||
 1 Qtr. | 1194 | 24.4 |
 2 Qtr. | 1364 | 27.8 |
 3 Qtr. | 1146 | 23.4 |
 4 Qtr. | 1198 | 24.4 |
Weapons present | ||
 Yes (1) | 1294 | 49.1 |
 No (0) | 1344 | 50.9 |
Vessel status | ||
 Stationary (0) | 2568 | 53.2 |
 At sail (1) | 2255 | 46.8 |
Number of pirates | ||
 Mean | 6.37 | na |
 Standard deviation | 7.13 | na |
 Min. | 1 | na |
 Max. | 200 | na |
Vessel type | ||
 Tanker, bulk carrier, or container (1) | 3401 | 69.4 |
 Other vessel type (0) | 1501 | 30.62 |
Year | ||
 2000 | 469 | 9.6 |
 2001 | 334 | 6.8 |
 2002 | 370 | 7.6 |
 2003 | 448 | 9.1 |
 2004 | 335 | 6.8 |
 2005 | 276 | 5.6 |
 2006 | 239 | 4.9 |
 2007 | 263 | 5.4 |
 2008 | 295 | 6.0 |
 2009 | 407 | 8.3 |
 2010 | 458 | 9.3 |
 2011 | 442 | 9.0 |
 2012 | 301 | 6.1 |
 2013 | 265 | 5.4 |