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Table 2 Blood Pb levels at demographic factors, further in C34.901 or non-C34.901 among C00-D48 inpatients

From: Analysis of disease profile, and medical burden by lead exposure from hospital information systems in China

Categorical Variables

No.

Percentage (%)

Pb levels

p-value

Statistics

No. of C34.901 (Pb levels)

No. of non-C34.901 (Pb levels)

Gender

Male

7645

57.23%

22.00

p < 0.01

−7.40a

15 (50.20)

101 (24.00)

Female

5713

42.77%

20.00

15 (36.80)

105 (23.98)

Age

<  18

5042

37.83%

24.22

p < 0.01

596.34b

–

14 (24.50)

18–45

2581

19.37%

25.00

1 (6.20)

52 (19.00)

45–60

1839

13.80%

24.20

8 (53.03)

68 (26.92)

>  60

3866

29.01%

16.00

21 (45.34)

78 (22.00)

Ethnic group

Han

12,762

95.17%

20.21

p < 0.01

−38.54a

30 (46.44)

205 (23.98)

Minority

647

4.83%

24.30

–

7 (25.60)

Blood type (ABO)

A

1550

27.87%

20.00

p > 0.05

6.54b

3 (47.53)

48 (20.85)

B

1696

30.49%

19.29

4 (25.11)

36 (25.00)

O

1806

32.47%

20.11

2 (33.47)

50 (20.50)

AB

510

9.17%

19.20

4 (32.75)

9 (37.14)

Blood type (Rh)

Negative

73

1.47%

43.47

p < 0.01

−7.05a

2 (72.45)

0

Positive

4892

98.53%

19.33

13 (36.00)

131 (21.00)

Visit times

First

6770

50.49%

24.00

p < 0.01

−12.42a

13 (56.67)

115 (26.00)

Not first

6638

49.51%

19.11

17 (30.00)

98 (20.55)

Treatment results

Cured

4890

36.56%

24.00

p < 0.01

213.66b

2 (43.91)

47 (25.00)

Improved

7800

58.31%

19.39

8 (16.65)

127 (22.00)

Invalid

41

0.31%

25.00

–

–

Untreated

112

0.84%

26.00

1 (36.00)

9 (20.20)

Died

55

0.41%

23.00

3 (15.11)

3 (32.00)

Others

479

3.58%

33.80

16 (56.67)

27 (39.54)

  1. C34.901, Malignant Neoplasm of Lung
  2. C00-D48, Neoplasms
  3. a Z-score of two independent samples by Wilcoxon rank sum test
  4. b Chi-Squared values (χ2) of multiple independent samples by Kruskal-Wallis H test