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Table 2 Characteristics of the children who completed questionnaires

From: Changes in weight status, quality of life and behaviours of South Australian primary school children: results from the Obesity Prevention and Lifestyle (OPAL) community intervention program

  Year 3 (Baseline)
(n = 2611)
Statistical differencea Year 5 (Final)
(n = 1873)
Statistical differenceb
  INT (n, %) COMP (n, %) P value INT (n, %) COMP (n, %) P value
All 1373 (52.6) 1238 (47.4)   1092 (58.3) 781 (41.7)  
Sex    0.199    0.040
 Boys 700 (51.0) 600 (48.5)   490 (44.9) 388 (49.7)  
 Girls 673 (49.0) 638 (51.5)   602 (55.1) 393 (50.3)  
Localityc    < 0.001    < 0.001
 Urban 965 (70.3) 741 (59.9)   705 (64.6) 574 (73.7)  
 Rural 408 (29.7) 497 (40.1)   387 (35.4) 205 (26.3)  
Age, years    0.051    0.125
 ≤9 374 (27.3) 379 (30.6)   340 (31.1) 214 (27.4)  
 10 481 (35.1) 447 (36.1)   380 (34.8) 270 (34.6)  
 ≥11 514 (37.5) 412 (33.3)   372 (34.0) 297 (38.0)  
SESd    < 0.001    < 0.001
 Quintile 1 271 (19.7) 88 (7.1)   268 (24.5) 54 (6.9)  
 Quintile 2 421 (30.7) 220 (17.8)   217 (19.9) 140 (17.9)  
 Quintile 3 328 (23.9) 198 (16.0)   251 (23.0) 223 (28.6)  
 Quintile 4 237 (17.3) 607 (49.0)   334 (30.6) 364 (46.6)  
 Quintile 5 116 (8.4) 124 (10.0)   22 (2.0) 0 (0)  
Phase    < 0.001    0.097
 1 884 (64.4) 613 (49.5)   657 (60.2) 440 (56.3)  
 2 489 (35.6) 625 (50.5)   435 (39.8) 341 (43.7)  
  1. Abbreviations: INT Intervention communities, COMP Comparison communities
  2. aDifference between INT and COMP at baseline; bDifference between INT and COMP at final; cn = 1 missing at final in COMP; dSES is measured by ICSEA scores. Quintiles (Q1 = highest, Q5 = lowest) are based on 2011 National data at baseline (cut-offs 940/980/1020/1076/1287) and 2014 National data at final (cut-offs 942/985/1023/1074/1292). The national average ICSEA score is 1000 [31]. NB: As ICSEA score is not an individual-level SES measure but a school-level measure [31], caution should be taken when interpreting these data. Importantly, ICSEA does not use individual information concerning the wealth of the parents or children
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