3. The table below shows the characteristics of cases and controls from a case-control study into stressful life events and breast cancer in women. Identify the number items on the table whether they are: Nominal, Ordinal, Interval and Ratio Breast cancer group (n = 106) Control group (n=226) Variable P value 1 Age 61.6 (10.9) 51.0 (8.5) 0.000* - Social class (%): I 10 (10) 20 (9) II 38 (36) 82 (36) III non-manual 2 28 (26) 72 (32) 0.094 III manual 13 (12) 24 (11) IV 11 (10) 21 (9) V 3 (3) 2 (1) VI 3 (3) 4 (2) No of children (%): 0 15 (14) 31 (14) 1 16 (15) 31 (13.7) 0.97 2 42 (40) 84 (37) 23 32 (31) 80 (35) 21.3 (5.6) 20.5 (4.3) 0.500* 12.8 (1.4) 13.0 (1.6) 0.200* [Age at birth of first child Age at menarche Menopausal state (%): Premenopausal Perimenopausal Postmenopausal 14 (13) 66 (29) 9 (9) 43 (19) 0.000 117 (52) 83 (78) 47.7 (4.5) 45.6 (5.2) 0.001* Age at menopause Lifetime use of oral contraceptives (%) 38 61 0.000¹ 3.0 (5.4) 4.2 (5.0) 0.065 No of months breastfeeding (n=90) (n=195) 7.4 (9.9) 7.4 (12.1) 0.990* 29 (27) 78 (35) 0.193 1.6 (3.7) 1.9 (4.0) 0.460* 8 (8) 10 (4) 0.241 Lifetime use of hormone replacement therapy (%) Mean years of hormone replacement therapy Family history of ovarian cancer (9) History of benign breast disease (9) Family history of breast cancer (%) Units of alcohol/week (%): 15 (15) 105 (47) 0.000 16 (15) 35 (16) 0.997 0 38 (36) 59 (26) 0-4 26 (25) 71 (31) 0.927⁰ 5-9 20 (19) 52 (23) >10 22 (21) 44 (20) No of cigarettes/day: 0 83 (78.3) 170 (75.2) 1-9 8 (7.6) 14 (6.2) 0.383⁰ >10 15 (14.2) 42 (18.6) -Body mass index (kg/m²) 0.001 3 5 6 7 8 9 10 26.8 (5.5) 24.8 (4.2)
3. The table below shows the characteristics of cases and controls from a case-control study into stressful life events and breast cancer in women. Identify the number items on the table whether they are: Nominal, Ordinal, Interval and Ratio Breast cancer group (n = 106) Control group (n=226) Variable P value 1 Age 61.6 (10.9) 51.0 (8.5) 0.000* - Social class (%): I 10 (10) 20 (9) II 38 (36) 82 (36) III non-manual 2 28 (26) 72 (32) 0.094 III manual 13 (12) 24 (11) IV 11 (10) 21 (9) V 3 (3) 2 (1) VI 3 (3) 4 (2) No of children (%): 0 15 (14) 31 (14) 1 16 (15) 31 (13.7) 0.97 2 42 (40) 84 (37) 23 32 (31) 80 (35) 21.3 (5.6) 20.5 (4.3) 0.500* 12.8 (1.4) 13.0 (1.6) 0.200* [Age at birth of first child Age at menarche Menopausal state (%): Premenopausal Perimenopausal Postmenopausal 14 (13) 66 (29) 9 (9) 43 (19) 0.000 117 (52) 83 (78) 47.7 (4.5) 45.6 (5.2) 0.001* Age at menopause Lifetime use of oral contraceptives (%) 38 61 0.000¹ 3.0 (5.4) 4.2 (5.0) 0.065 No of months breastfeeding (n=90) (n=195) 7.4 (9.9) 7.4 (12.1) 0.990* 29 (27) 78 (35) 0.193 1.6 (3.7) 1.9 (4.0) 0.460* 8 (8) 10 (4) 0.241 Lifetime use of hormone replacement therapy (%) Mean years of hormone replacement therapy Family history of ovarian cancer (9) History of benign breast disease (9) Family history of breast cancer (%) Units of alcohol/week (%): 15 (15) 105 (47) 0.000 16 (15) 35 (16) 0.997 0 38 (36) 59 (26) 0-4 26 (25) 71 (31) 0.927⁰ 5-9 20 (19) 52 (23) >10 22 (21) 44 (20) No of cigarettes/day: 0 83 (78.3) 170 (75.2) 1-9 8 (7.6) 14 (6.2) 0.383⁰ >10 15 (14.2) 42 (18.6) -Body mass index (kg/m²) 0.001 3 5 6 7 8 9 10 26.8 (5.5) 24.8 (4.2)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:3. The table below shows the characteristics of cases and controls from a case-control study into
stressful life events and breast cancer in women. Identify the number items on the table whether
they are: Nominal, Ordinal, Interval and Ratio
Breast cancer
group (n = 106)
Control group
(n=226)
Variable
P value
1
Age
61.6 (10.9)
51.0 (8.5)
0.000*
-Social class* (%):
I
10 (10)
20 (9)
II
38 (36)
82 (36)
III non-manual
28 (26)
72 (32)
0.094¹
III manual
13 (12)
24 (11)
IV
11 (10)
21 (9)
V
3 (3)
2 (1)
VI
3 (3)
4 (2)
No of children (%):
0
15 (14)
31 (14)
1
16 (15)
31 (13.7)
0.97
2
42 (40)
84 (37)
>3
32 (31)
80 (35)
21.3 (5.6)
20.5 (4.3)
0.500*
12.8 (1.4)
13.0 (1.6)
0.200*
Age at birth of first child
Age at menarche
Menopausal state (%):
Premenopausal
Perimenopausal
14 (13)
66 (29)
9 (9)
43 (19)
0.000
117 (52)
Postmenopausal
Age at menopause
83 (78)
47.7 (4.5)
38
0.001*
45.6 (5.2)
61
Lifetime use of oral contraceptives (%)
0.000¹
3.0 (5.4)
4.2 (5.0)
0.065
No of months breastfeeding
(n=90)
(n = 195)
7.4 (9.9)
7.4 (12.1)
0.990*
29 (27)
78 (35)
0.1938
1.9 (4.0)
0.460*
1.6 (3.7)
8 (8)
10 (4)
0.241
Lifetime use of hormone replacement therapy (%)
Mean years of hormone replacement therapy
Family history of ovarian cancer (%)
History of benign breast disease (%)
Family history of breast cancer (%)
Units of alcohol/week (%):
15 (15)
105 (47)
0.000
16 (15)
35 (16)
0.997
0
38 (36)
59 (26)
26 (25)
71 (31)
0.927¹
5-9
20 (19)
52 (23)
>10
22 (21)
44 (20)
No of cigarettes/day:
83 (78.3)
170 (75.2)
1-9
8 (7.6)
14 (6.2)
0.383
>10
15 (14.2)
42 (18.6)
-Body mass index (kg/m²)
0.001*
3
5
6
7
8
10
26.8 (5.5)
24.8 (4.2)
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