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Table 1 The relative frequency of the characteristics of the population within each age category

From: Past mercury exposure and current symptoms of nervous system dysfunction in adults of a First Nation community (Canada)

 

Na

18–29 y

n (%)

30–49 y

n (%)

50+ y

n (%)

Total

n (%)

Chi-square (LR)b

p-value

Sex

391

     

 Women

 

66 (53.3%)

97 (51.6%)

48 (60.8%)

211 (54%)

1.94

0.380

 Men

 

58 (46.7%)

72 (48.4%)

31 (39.2%)

180(46%)

 

Living on reserve

390

95 (76.6%)

144 (77.0%)

62 (78.5%)

301 (77.2%)

0.10

0.949

Schooling

 Attended school

382

122 (100%)

180 (98.4%)

75 (97.4%)

377 (98.7%)

4.13

0.257

 Attended high school

366

115 (98.3%)

166 (94.9%)

48 (64.9%)

329 (89.9%)

52.6

< 0.0001

 Other education

386

33 (27.1%)

108 (58.4%)

43 (54.4%)

184 (47.7%)

31.69

< 0.0001

Residential school

 Attended residential school

376

0

6 (3.4%)

52 (66.7%)

58 (15.4%)

171

< 0.0001

 Parents in residential school

326

36 (40.5%)

148 (89.7%)

68 (94.4%)

252 (77.3%)

89

< 0.0001

Work activities

 Currently workingc

349

39 (37.5%)

94 (52.2%)

32 (48.5%)

165 (49.2%)

5.90

0.052

 Currently looking for workc

165

45 (81.8%)

58 (75.3%)

7 (21.2%)

110 (66.7%)

38.2

< 0.0001

Struggle to pay for food monthly or more in the last year

332

28 (26.9%)

38 (24.2%)

17 (23.9%)

83 (25.0%)

3.65

0.392

Current smoker

376

54 (46.2%)

90 (49.7%)

24 (30.8%)

168 (44.7%)

0.28

0.016

Heavy drinker

360

79 (71.2%)

100 (56.8%)

20 (27.4%)

199 (55.3%)

35.3

< 0.0001

Obese

375

47 (39.8%)

93 (51.7%)

36 (46.8%)

176 (46.9%)

4.03

0.133

At least one diagnosed chronic health condition

385

46 (38.3%)

117 (62.9%)

67 (84.8%)

230 (59.7%)

46.6

< 0.0001

At least one diagnosed nervous system disorder

381

20 (17.1%)

37 (19.9%)

35 (44.9%)

92 (24.2%)

32.6

< 0.0001

  1. aNumber (N) of valid responses (does not include don’t know or don’t remember and refused)
  2. bLikelihood Ratio Chi-square compares the relative frequency between age categories
  3. cExcludes students, stay at home parents and retirees