Changes

{| class="wikitable"

{| class="wikitable"

|-

|-

| Disease status || Exposed || Unexposed || Total

| '''Disease status''' || '''Exposed''' || '''Unexposed''' || '''Total'''

|-

|-

| Diseased || a₁ || a₀ || m₁

| '''Diseased''' || a₁ || a₀ || m₁

|-

|-

| Non-diseased || b₁ || b₀ || m₀

| '''Non-diseased''' || b₁ || b₀ || m₀

|-

|-

| Total || n₁ || n₀ || n

| '''Total''' || n₁ || n₀ || n

|}

|}

A chi-square test could also be used to investigate whether the body condition score of a horse was associated its lameness score, for example:

A chi-square test could also be used to investigate whether the body condition score of a horse was associated its lameness score, for example:

{| class="wikitable"

{| class="wikitable"

|-

|-

| Lameness score || Body condition score 1-3 || Body condition score 4-6 || Body condition score 7-9  || Total

| '''Lameness score''' || '''Body condition score 1-3''' || '''Body condition score 4-6''' || '''Body condition score 7-9''' || '''Total'''

|-

|-

| 0 || a₁ || a₂ || a₃ || m_a

| '''0''' || a₁ || a₂ || a₃ || m_a

|-

|-

| 1 || b₁ || b₂ || b₃ || m_b

| '''1''' || b₁ || b₂ || b₃ || m_b

|-

|-

| 2 || c₁ || c₂ || c₃ || m_c

| '''2''' || c₁ || c₂ || c₃ || m_c

|-

|-

| 3 || d₁ || d₂ || d₃ || m_d

| '''3''' || d₁ || d₂ || d₃ || m_d

|-

|-

| 4 || e₁ || e₂ || e₃ || m_e

| '''4''' || e₁ || e₂ || e₃ || m_e

|-

|-

| 5 || f₁ || f₂ || f₃ || m_f

| '''5''' || f₁ || f₂ || f₃ || m_f

|-

|-

| 6 || g₁ || g₂ || g₃ || m_g

| '''6''' || g₁ || g₂ || g₃ || m_g

|-

|-

| Total | n₁ || n₂ || n₃ || n

| '''Total''' | n₁ || n₂ || n₃ || n

|}

|}