Re-examining environmental correlates of Plasmodium falciparum malaria endemicity: a data-intensive variable selection approach

Table 4 The final set of malaria covariates

Variable	Coefficient	Std. Error	Z value	Term 1	Transform 1	Term 2	Transform 2
(Intercept)	−5.83E + 00	6.33E-02	−92.1
v1	−3.07E-03	4.12E-05	−74.36	T17	7	T23	11
v2	−5.72E-01	7.31E-03	−78.19	T13	11	T5	7
v3	6.42E-01	2.10E-02	30.54	T11	10	T32	7
v4	1.71E + 00	2.12E-02	80.87	T3	8	T22	4
v5	3.70E-01	1.17E-02	31.65	T3	11	T10	3
v6	−7.44E-01	6.12E-02	−12.16	T2	9	T10	10
v7	9.84E-01	1.51E-02	65.4	T1	11	T10	3
v8	−1.43E-01	4.77E-03	−29.96	T27	3	T18	2
v9	1.55E-04	2.37E-06	65.65	T8	7	T26	6
v10	−6.78E-01	1.19E-02	−57.05	T9	6	T7	10
v11	2.59E-01	4.76E-03	54.32	T31	2	T21	2
v12	−1.36E-03	3.87E-05	−35.21	T19	7	T24	11
v13	7.60E-01	2.27E-02	33.4	T3	7	T32	10
v14	3.04E + 00	9.74E-02	31.24	T14	3	T7	10
v15	−6.75E-02	2.49E-03	−27.08	T20	1	T25	3
v16	−5.32E-01	2.38E-02	−22.35	T16	10	T29	3
v17	−1.04E + 00	2.22E-02	−46.79	T15	4	T28	2
v18	−8.20E-03	1.86E-04	−44.13	T12	10	T28	10
v19	2.02E + 01	5.96E-01	34	T4	4	T11	10
v20	2.94E-01	2.07E-02	14.22	T30	10	T6	3

The covariates remaining in the multivariate model, along with their transforms, coefficients, and z-scores. Note that in cases where transform three (i.e., the reciprocal) was used the sign of the coefficient is typically the opposite of what would be expected. The terms are further explained in Table 5.

ISSN: 1475-2875