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Table 2 Variations with calendar event in average numbers $ of per evening assault presentations across English emergency department services

From: Nighttime assaults: using a national emergency department monitoring system to predict occurrence, target prevention and plan services

Calendar events   All attendances Males Females
   95% CI    95% CI    95% CI  
Days Mean Low Up Sig Mean Low Up Sig Mean Low Up Sig
All days 1095 301.4 292.1 310.8   227.3 219.7 234.9   72.6 70.8 74.4  
Holidays No holiday 1072 301.7 292.1 311.2 0.946 227.7 219.9 235.4 0.869 72.5 70.7 74.3 0.940
  Bank holiday 18 287.7 236.6 338.8   209.1 168.0 250.2   77.0 66.8 87.2  
  Christmas 3 264.0 154.8 373.2   189.7 95.8 283.6   73.3 58.2 88.5  
  New Year 3 278.0 161.6 394.4   205.0 88.8 321.2   72.7 66.4 78.9  
Holiday No holiday 1071 296.0 287.0 305.0 <0.001 222.9 215.6 230.2 <0.001 71.6 69.9 73.4 <0.001
Eves Bank holiday 18 447.1 390.0 504.1   340.9 293.5 388.4   102.2 92.2 112.3  
  Christmas 3 485.3 422.2 548.5   399.7 323.2 476.0   83.3 54.5 112.1  
  New Year 3 1196.3 975.0 1417.7   956.7 765.1 1148.2   231.0 185.4 276.6  
Dayi Sunday 142 230.2 221.8 238.6 <0.001 166.2 159.6 172.9 <0.001 62.9 60.7 65.2 <0.001
  Monday 156 198.6 193.2 204.0   143.6 139.5 147.7   54.2 52.3 56.0  
  Tuesday 157 186.1 181.0 191.3   132.9 128.9 136.8   52.5 50.8 54.2  
  Wednesday 155 197.8 190.7 204.8   143.6 137.7 149.5   53.4 51.6 55.2  
  Thursday 151 227.2 221.2 233.2   170.1 165.3 174.9   56.0 54.3 57.8  
  Friday 154 503.1 491.8 514.3   393.2 383.7 402.6   107.1 104.5 109.6  
  Saturday 156 523.1 509.1 537.0   406.0 395.0 417.0   114.3 111.0 117.6  
Calendar Jan 92 246.0 219.7 272.3 <0.001 184.9 163.5 206.4 0.003 59.9 54.9 64.9 <0.001
Monthi Feb 84 280.8 249.0 312.6   212.3 186.6 238.1   66.9 60.8 73.0  
  Mar 93 267.1 240.2 294.0   200.8 178.8 222.8   65.6 60.5 70.7  
  Apr 86 309.7 277.2 342.2   231.9 205.8 258.1   75.5 69.1 81.8  
  May 87 334.0 300.1 367.8   251.3 223.4 279.1   80.3 74.2 86.3  
  Jun 90 321.2 287.5 354.9   238.8 211.7 266.0   80.5 74.0 87.0  
  Jul 93 319.2 287.8 350.6   238.5 213.1 263.9   79.3 73.1 85.5  
  Aug 90 322.7 293.2 352.3   241.2 217.0 265.4   80.2 74.6 85.8  
  Sep 90 297.5 266.0 329.1   224.8 199.0 250.7   71.4 65.6 77.3  
  Oct 93 312.0 276.4 347.6   238.5 209.5 267.4   72.4 65.6 79.2  
  Nov 90 274.0 244.2 303.8   205.8 181.6 230.0   67.1 61.3 72.9  
  Dec 83 266.7 236.6 296.7   205.7 180.6 230.8   59.6 54.4 64.9  
Change of Neither 935 296.6 287.0 306.1 0.205 223.6 215.8 231.3 0.189 71.5 69.7 73.8 0.257
monthi,ii First 2 days 69 269.7 237.9 301.6   200.1 174.5 225.7   68.4 61.9 74.9  
  Last 2 days 67 314.7 271.7 357.8   236.9 201.8 272.0   76.4 68.4 84.5  
Change of Neither 599 294.2 282.3 306.1 0.288 222.0 212.3 231.7 0.295 70.8 68.5 73.0 0.203
monthi,ii First week 246 288.1 269.9 306.2   215.7 201.2 230.3   70.9 67.2 74.6  
  Last week 226 309.1 288.2 329.1   233.0 216.0 250.1   74.7 70.7 78.6  
Yeariii 2008/09 366 285.5 270.1 300.8 0.060 215.0 202.5 227.5 0.078 69.8 66.9 72.8 0.067
  2009/10 365 309.1 292.1 326.0   233.1 219.4 246.9   73.0 69.8 76.2  
  2010/11 364 309.8 293.5 326.2   233.9 220.6 247.2   74.9 71.8 78.1  
  1. $National emergency department data are not complete for England and therefore figures do not represent national totals - see Methods. Statistics use analysis of variance. iVariables exclude banks holiday and Christmas eves. iiChange of month variables mark the first and last two days and first and last week in each month. iiiYears run 31st March to 30th March to account for time-shifted data.