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. 2020 May 20;15(5):e0231527. doi: 10.1371/journal.pone.0231527

Table 3. Non-linear OLS models.

(1) (2) (3) (4) (5) (6)
Cost per woman tested (ln) Cost per woman tested (ln) Cost per woman tested (ln) Cost per woman in ART (ln) Cost per woman in ART (ln) Cost per woman in ART (ln)
VARIABLES
 Supply side characteristics
Scale (ln) -0.58*** -0.42 3.19*** -0.72*** -1.05*** 0.19
(0.07) (0.46) (0.76) (0.07) (0.37) (0.64)
Scale squared (ln) -0.01 -0.72*** 0.06 -0.42*
(0.04) (0.13) (0.06) (0.23)
Scale cubic (ln) 0.04*** 0.055**
(0.007) (0.02)
Hospital (0,1) 0.39** 0.40** 0.35* 0.33* 0.29 0.23
(0.18) (0.18) (0.17) (0.18) (0.18) (0.18)
Primary care nurse (%) -0.36 -0.37 -0.32 -0.34 -0.25 -0.31
(0.23) (0.23) (0.22) (0.27) (0.30) (0.31)
Urban area 0.45 0.50 0.16 1.26** 1.00** 0.68*
(0.34) (0.33) (0.27) (0.48) (0.46) (0.40)
Demand side characteristics
Maternal HIV prevalence 0.009 0.01 0.01 0.001 -0.001 -0.001
(0.007) (0.007) (0.007) (0.008) (0.008) (0.008)
MTCT, 9–18 months -0.04 -0.03 -0.12*** 0.01 -0.03 -0.09
(0.05) (0.05) (0.04) (0.08) (0.08) (0.07)
HIV-free infant survival, 9–18 months -0.05 -0.04 -0.12*** 0.009 -0.03 -0.09
(0.05) (0.05) (0.03) (0.08) (0.08) (0.07)
Uptake of HIV testing during pregnancy 0.008 0.008 0.008 0.001 0.002 0.002
(0.007) (0.007) (0.006) (0.008) (0.008) (0.007)
 Process quality
Offers contraception services -0.001 0.001 0.007 -0.02 -0.02 -0.03
(0.04) (0.04) (0.04) (0.05) (0.05) (0.05)
Offers ARV prophylaxis 0.007 0.001 -0.06 0.16 0.15 0.13
(0.10) (0.10) (0.09) (0.14) (0.14) (0.14)
Offers ANC services 0.009 0.012 0.02 0.003 -0.003 -0.004
(0.03) (0.03) (0.03) (0.04) (0.04) (0.04)
Constant 11.38* 10.21* 12.40*** 6.40 11.64 17.20**
(5.88) (5.89) (4.45) (8.54) (9.09) (8.11)
Observations 130 130 130 122 122 122
R-squared 0.49 0.48 0.53 0.46 0.46 0.48

Robust standard errors in parentheses

*** p<0.01,

** p<0.05,

* p<0.1