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Table 1 Statistical analyses of life spans

From: Delayed accumulation of intestinal coliform bacteria enhances life span and stress resistance in Caenorhabditis elegans fed respiratory deficient E. coli

Strain, food, treatment

n

mean ± s.d. (dy)

max (dy)

% change in mean life span from control

p-value

N2, OP50 a

79

15 ± 4

20

  

N2, GD1a

61

31 ± 5

38

+ 107

<.0001

N2, OP50 b (Adult)

164

18 ± 3

29

  

N2, GD1b

135

30 ± 5

34

+ 67

<.0001

skn-1(zu169)−/−, OP50b

153

16 ± 3

20

− 11

<.0001

skn-1(zu169)−/−, GD1b

131

27 ± 6

35

+ 50

<.0001

N2, GD1::pAHG, – UV c

52

18 ± 4

22

  

N2, GD1::pBSK,–UVc

60

16 ± 4

22

− 11

.0001

N2, GD1::pAHG, + UVc

64

20 ± 3

22

+ 11

<.0001

N2, GD1::pBSK, + UVc

64

21 ± 3

23

+ 17

<.0001

N2, GD1::pAHG only d

71

23 ± 3

26

  

N2, GD1::pBSK onlyd

69

30 ± 6

42

+ 30

<.0001

N2, Mixedd

58

25 ± 4

33

+ 9

<.0001

N2, OP50 e

529

19 ± 5

27

  

N2, GD1e

225

26 ± 8

39

+ 37

<.0001

coq-3(ok506)−/−, OP50e

119

15 ± 6

29

− 21

<.0001

coq-3(ok506)−/−, GD1e

102

30 ± 12

50

+ 58

<.0001

coq-3(qm188)−/−, OP50e

259

16 ± 5

25

− 16

<.0001

coq-3(qm188)−/−, GD1e

141

33 ± 18

63

+ 74

<.0001

N2, OP50 f (Adult)

63

16 ± 4

22

  

N2, GD1f

55

28 ± 7

40

+ 75

<.0001

coq-3(ok506)−/−, OP50f

84

8 ± 3

14

− 50

<.0001

coq-3(ok506)−/−, GD1f

53

34 ± 8

47

+ 113

<.0001

  1. a, b, c, d, e, f, identify cohorts from the same experiment. Within each cohort data were subjected to One-Way ANOVA analyses with Fisher's test at a significance of 0.05.
  2. (p-values are compared to the condition in bold text for a given cohort).