From: A reliable morphological method to assess the age of male Anopheles gambiae
Quantitative Model | Treatment of explanatory variables x_{1} & x_{2} | No. of categories | Category definitions | |
---|---|---|---|---|
Spermatocyst number (x_{1}) | % Size of sperm reservoir (x_{2}) | |||
Continuous | Continuous | n/a | n/a | n/a |
Median | Categorical | 2 |
a = 0–2 b = 3–5 |
a = < 60% b = ≥ 60% |
Quartile | Categorical | 4 |
a = 0 b = 1–3 c = 4 d = 5 |
a = ≤ 40% b = 41 – 59% c = 60 – 94% d = ≥ 95% |
Break points | Categorical | 4 |
a = 0 b = 1–3 c = 4 d = 5 |
a = ≤ 30% b = 31 – 60% c = 61 – 90% d = ≥ 91% |