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Table 2 The relative frequency of fish consumption by age category

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

  N 18-29 y 30-49 y 50+ y Total Chi-square
n n n n (LR)
(%) (%) (%) (%) p-value
Fish consumption at 10 y of age 333      
 None   9 (9.4%) 10 (6.1%) 4 (5.5%) 23 (6.9%) 101
<0.0001
 Hardly ever/occasionally   32 (33.3%) 26 (15.9%) 3 (4.1%) 61 (18.3%)  
 Once a month   24 (25.0%) 38 (23.2%) 2 (2.7%) 64 (19.2%)  
 Several times a month   28 (29.2%) 96 (42.1%) 24 (32.9%) 121 (36.4%)  
 Every day   3 (3.1%) 21 (12.8%) 40 (54.8%) 64 (19.2%)  
Walleye consumption over past year 382      
 Not at all   23 (19.5%) 29 (15.7%) 9 (11.4%) 61 (16.0%) 3.44
0.486
 A few times   60 (50.9%) 96 (51.9%) 48 (60.8%) 204 (53.4%)  
 Often   35 (29.7%) 60 (32.4%) 22 (27.9%) 117 (30.6%)  
  1. Likelihood Ratio Chi-square compares the relative frequency between age categories