Table 1

Prevalence of gastrointestinal conditions* and use of some restrictive diet† according to sociodemographic variables. Individuals ≥20 years, South Australia, 2015 (n=2912)

NWith a GI condition
(16.4%)
Without a GI condition (83.6%)
n%‡On a restrictive dietn%On a restrictive diet
(60.7%)§(31.3%)§
GenderP=0.001 P<0.001
  Males1430176 12.3 (49.7) 1254 87.7 (26.5)
  Female1482302 20.4 (67.1) 1180 79.6 (36.3)
Age group (years)P=0.380 P=0.005
  20–3478972 9.1 (61.7) 717 90.9 (26.9)
  35–4971992 12.7 (70.2) 627 87.3 (34.6)
  50–64757158 20.9 (58.5) 599 79.1 (34.1)
  65–79495115 23.2 (58.2) 380 76.8 (32.7)
 ≥8015241 26.8 (53.7) 111 73.2 (20.5)
Marital statusP=0.204 P=0.220
  Single, divorced or widowed97016116.6 (56.6) 809 83.4 (29.3)
  Married or living with partner194231716.3 (62.8) 1625 83.7 (32.2)
Area of residenceP=0.174 P=0.201
  Urban217238017.5 (62.3) 1792 82.5 (32.2)
  Rural7409813.3 (54.5) 642 86.7 (28.8)
Attained educational levelP=0.045 P=0.019
  Bachelor or higher74311715.7 (63.9) 626 84.3 (32.5)
 Certificate/diploma82114617.8 (68.5) 675 82.2 (34.8)
  Trade qualification3845013.1 (60.7) 334 86.9 (28.3)
  Secondary70511716.6 (53.8) 588 83.4 (25.7)
  Less than secondary2594818.4 (45.8) 211 81.6 (32.5)
Working statusP=0.606 P=0.091
  Employed full time1083128 11.8 (60.5) 955 88.2 (29.8)
  Employed part time59495 16.0 (67.3) 499 84.0 (36.6)
  Not working57796 16.7 (57.6) 481 83.3 (30.6)
  Retired658159 24.1 (58.9 499 75.9 (29.4)
Socioeconomic position (quartiles)¶P=0.788 P=0.030
  High72210815.0 (57.6) 614 85.0 (33.8)
  Middle-high72512116.7 (62.0) 604 83.3 (34.1)
  Middle-low64711417.6 (64.3) 533 82.4 (29.5)
  Low81813516.5 (59.3) 683 83.5 (28.0)
  • *Including irritable bowel syndrome, celiac disease, Crohn’s disease, ulcerative colitis and/or gastrointestinal reflux.

  • †Including the restriction of milk/dairy products, gluten and/or if they avoid other foods causing pain, bloating and/or diarrhoea.

  • ‡Values in bold represent those cases where the prevalence of gastrointestinal conditions was different at a p<0.05.

  • §Values in parenthesis represent the percentage of individuals on a restrictive diet in the corresponding strata (with or without a gastrointestinal condition).

  • ¶Based on the Socio-Economic Indexes for Areas Index of Relative Socio-economic Advantage and Disadvantaged.

  • Italicised values have been provided for each sociodemographic variable- gender, age group, marital status, area of residence, attained educational level, working status and socioeconomic postion. The P value reported relates to differences between the proportions reporting the levels of each variable eg, male vs female or differences between age groups.

  • GI, gastrointestinal condition.