Table 3.

Statistical test results for combinations of two pH and four salt levels.

pH	% NaCl	Test	Estimate	Std.err.	t-Value	p
5.2	1.3	Day 0 vs. day 1	− 3.3451	1.1179	− 2.9922	0.0402
5.2	1.3	Day - linear	− 2.3487	0.3352	− 7.0077	0
5.2	1.3	Day - quadratic	1.1097	0.2195	5.0549	0
5.2	1.8	Day 0 vs. day 1	− 3.6991	1.0708	− 3.4545	0.0259
5.2	1.8	Day - linear	− 2.1371	0.3879	− 5.5093	0
5.2	1.8	Day - quadratic	1.6597	0.3532	4.6993	0.0002
5.2	2.3	Day 0 vs. day 1	− 3.4608	0.4035	− 8.576	0.001
5.2	2.3	Day - linear	− 2.1468	0.571	− 3.7599	0.0017
5.2	2.3	Day - quadratic	1.664	0.5127	3.2457	0.0051
5.2	2.8	Day 0 vs. day 1	− 4.5351	1.3373	− 3.3914	0.0275
5.2	2.8	Day - linear	− 2.5658	2.2312	− 1.15	0.2798
5.2	2.8	Day - quadratic	2.8925	1.5364	1.8826	0.0924
4.6	1.3	Day 0 vs. day 1	− 5.4694	1.3278	− 4.119	0.0146
4.6	1.3	Day - linear	− 1.5108	0.1863	− 8.1081	0
4.6	1.3	Day - quadratic	2.3321	0.3878	6.0129	0
4.6	1.8	Day 0 vs. day 1	− 4.0087	0.1307	− 30.6683	0
4.6	1.8	Day - linear	− 1.5766	0.175	− 9.0075	0
4.6	1.8	Day - quadratic	2.1733	0.2798	7.766	0
4.6	2.3	Day 0 vs. day 1	− 3.5904	0.4747	− 7.5632	0.0016
4.6	2.3	Day - linear	− 1.3681	0.3999	− 3.4214	0.003
4.6	2.3	Day - quadratic	1.4731	0.3382	4.3555	0.0004
4.6	2.8	Day 0 vs. day 1	− 3.3935	0.8678	− 3.9102	0.0297
4.6	2.8	Day - linear	− 2.0137	0.5374	− 3.7469	0.0018
4.6	2.8	Day - quadratic	1.6106	0.3873	4.1583	0.0007

The three estimates are for (1) the difference between day 0 (batter) versus day 1 (approximately 24 h of curing), and tests of the coefficients of (2) linear and (3) quadratic terms in a regression of the number of live larvae over days. The number of live larvae were modeled using a generalized linear model assuming an over-dispersed Poisson distribution; the independent variable for number of days was standardized to mean zero, variance one prior to modeling.