Table 4

Index group means and matching estimator results for kilograms harvested when plucking for men and women

Duration on ART

N

(men)

Kilograms Harvested (IG Mean)\1

Estimated Mean Difference

(IG – CG)\1

P > |z|\2

95% CI LL\2

95% CI UL\2

N

(women)

Kilograms Harvested (IG Mean)

Estimated Mean Difference

(IG – CG)\1

P > |z|\2

95% CI LL\2

95% CI UL/2


-24

35

40.39

0.92

0.79

-5.98

7.83

47

34.24

-3.93

0.20

-9.96

2.10

-23

35

37.30

-1.26

0.70

-7.70

5.19

48

35.16

-5.72

0.08

-12.11

0.66

-22

34

37.36

-0.17

0.96

-6.51

6.17

51

36.35

-5.57

0.12

-12.52

1.38

-21

32

38.26

0.29

0.91

-4.92

5.50

54

35.07

-6.24

0.04

-12.24

-0.23

-20

32

41.21

-5.57

0.29

-15.96

4.82

54

31.99

-6.87

0.04

-13.36

-0.37

-19

35

45.71

-2.58

0.72

-16.74

11.58

50

33.79

-4.99

0.11

-11.10

1.12

-18

33

37.26

-1.69

0.59

-7.89

4.50

49

34.31

-5.37

0.04

-10.54

-0.20

-17

38

44.48

0.35

0.94

-8.02

8.72

53

32.76

-2.57

0.32

-7.64

2.51

-16

35

41.63

-1.94

0.59

-8.91

5.02

50

34.60

-3.53

0.19

-8.75

1.69

-15

36

38.71

-0.40

0.90

-6.51

5.71

50

29.38

-6.05

0.03

-11.63

-0.47

-14

36

41.54

-2.65

0.58

-11.97

6.67

49

28.19

-6.69

0.01

-11.53

-1.85

-13

36

35.22

-3.20

0.35

-9.95

3.55

49

31.79

-6.50

0.03

-12.38

-0.61

-12

36

43.47

0.67

0.88

-7.92

9.25

52

31.26

-5.36

0.10

-11.81

1.09

-11

36

44.35

4.05

0.30

-3.64

11.74

48

33.75

-1.86

0.53

-7.66

3.94

-10

36

41.84

-2.11

0.58

-9.47

5.26

49

31.94

-6.24

0.03

-11.77

-0.70

-9

34

40.91

-3.78

0.27

-10.48

2.92

45

33.26

-5.32

0.04

-10.32

-0.32

-8

36

35.68

-9.93

0.01

-16.92

-2.93

46

34.28

-6.05

0.03

-11.38

-0.72

-7

36

41.06

-8.36

0.06

-17.07

0.34

42

36.30

-4.10

0.14

-9.57

1.37

-6

36

43.75

-3.34

0.59

-15.33

8.65

42

34.17

-5.30

0.10

-11.64

1.04

-5

33

35.72

-5.35

0.16

-12.85

2.15

44

30.06

-6.72

0.07

-13.99

0.56

-4

33

42.27

2.35

0.60

-6.54

11.24

45

28.19

-8.28

0.02

-15.01

-1.55

-3

32

36.73

-3.78

0.28

-10.69

3.13

46

29.53

-10.96

0.00

-18.17

-3.74

-2

34

30.76

-11.21

0.00

-18.77

-3.65

47

33.40

-4.67

0.17

-11.29

1.95

-1

31

38.56

-6.47

0.11

-14.50

1.55

46

29.78

-8.80

0.01

-15.39

-2.21

0

29

37.29

-4.92

0.26

-13.49

3.65

39

27.59

-5.96

0.06

-12.23

0.31

1

24

35.71

-6.78

0.05

-13.43

-0.13

31

29.15

-5.08

0.12

-11.43

1.27

2

27

36.12

-10.40

0.01

-18.69

-2.11

33

26.74

-9.72

0.01

-16.42

-3.01

3

32

37.31

-1.14

0.73

-7.73

5.44

34

26.94

-7.10

0.00

-11.87

-2.34

4

34

36.96

-0.42

0.90

-6.87

6.03

39

29.19

-6.85

0.02

-12.39

-1.32

5

33

34.67

-6.59

0.03

-12.44

-0.74

40

33.13

-3.15

0.49

-11.99

5.70

6

36

37.20

-3.81

0.16

-9.07

1.46

43

31.30

-5.01

0.08

-10.62

0.60

7

37

36.47

-5.99

0.05

-11.98

-0.01

45

31.03

-4.32

0.07

-9.04

0.40

8

37

38.83

-1.91

0.65

-10.04

6.22

44

31.98

-6.10

0.01

-10.50

-1.69

9

37

35.52

-3.18

0.25

-8.56

2.20

39

35.62

0.87

0.75

-4.40

6.13

10

37

34.03

-3.00

0.22

-7.78

1.78

40

33.01

-3.81

0.21

-9.79

2.17

11

36

39.44

0.33

0.92

-6.37

7.04

38

32.19

-5.17

0.02

-9.54

-0.80

12

33

34.03

-2.04

0.42

-6.97

2.89

42

28.76

-5.49

0.02

-10.06

-0.92


1/ / IG = index group, and CG = matching comparison group. The estimated mean difference is the bias-adjusted sample average treatment effect on the treated using nearest the neighbor matching estimator nnmatch in Stata 10, with 4 comparison workers matched to each index worker based on age, months of work experience, and gang.

2/ p-value for a z-test that mean difference = 0, rounded to two digits. 95% CI LL and UL are the lower and upper levels of the 95%

Larson et al. BMC Public Health 2009 9:240   doi:10.1186/1471-2458-9-240

Open Data