. 2020 Apr 28;140:101961. doi: 10.1016/j.tre.2020.101961

Table 5.1.

Optimal hygiene levels, profits, consumer surplus under Model $i \in (N, S, M)$ .

	Model N	Model S	Model M
Optimal hygiene level ( ${\bar{h}}_{i}^{*}$ )	${\bar{h}}_{N}^{*} = \frac{p}{k_{N}}$	${\bar{h}}_{S}^{*} = \frac{p}{k_{S}}$	${\bar{h}}_{M}^{*} = \frac{p - t}{k_{M}}$
Optimal profit ( ${\bar{Π}}_{i}^{*}$ )	$p (1 - p - η l) + \frac{p^{2}}{2 k_{N}} - F$	$p (1 - p - w - e l) + \frac{p^{2}}{2 k_{S}} - F$	$(p - t) (1 - p - y) + \frac{{(p - t)}^{2}}{2 k_{M}} - G$
Consumer surplus at ${\bar{h}}_{i}^{}$ ( ${\bar{CS}}_{i}^{}$ )	$\frac{{(k_{N} (1 - η l) + (1 - k_{N}) p)}^{2}}{2 k_{N}^{2}}$	$\frac{{(k_{S} (1 - w - e l) + (1 - k_{S}) p)}^{2}}{2 k_{S}^{2}}$	$\frac{{(k_{M} (1 - y) - t + (1 - k_{M}) p)}^{2}}{2 k_{M}^{2}}$