Childbearing May Increase the Risk of Nondiabetic Cataract in Chinese Women’s Old Age
Table 1
Summary of gender stratified basic characteristics of 14,119 participants.
Characteristic
Male ( = 6,806)
Female ( = 7,313)
Noncataract
Cataract
aPrevalence (%)
bP
Noncataract
Cataract
aPrevalence (%)
bP
Total,
6567
239
3.51
6844
469
6.41
Age, mean (SD)/years
70.81 (7.73)
75.00 (7.42)
<0.001
71.75 (8.78)
75.75 (8.49)
<0.001
NOC, (%)
0.141
<0.001
0
242 (3.69)
13 (5.44)
5.10
125 (1.83)
4 (0.85)
3.10
1
1110 (16.90)
37 (15.48)
3.23
904 (13.21)
49 (10.45)
5.14
2
1924 (29.30)
55 (23.01)
2.78
1662 (24.28)
83 (17.70)
4.76
3
1706 (25.98)
69 (28.87)
3.89
1880 (27.47)
131 (27.93)
6.51
4 or 5
1306 (19.89)
57 (23.85)
4.18
1753 (25.61)
150 (31.98)
7.88
6 or more
279 (4.25)
8 (3.35)
2.79
520 (7.60)
52 (11.09)
9.09
Diabetes status, (%)
0.177
<0.001
Nondiabetic
5991 (91.23)
212 (88.70)
3.42
6148 (89.83)
398 (84.86)
6.08
Diabetic
576 (8.77)
27 (11.30)
4.48
696 (10.17)
71 (15.14)
9.26
Hypertension status, (%)
0.012
<0.001
Nonhypertensive
4668 (71.08)
152 (63.60)
3.15
4785 (69.92)
265 (56.50)
5.25
Hypertensive
1899 (28.92)
87 (36.40)
4.38
2059 (30.08)
204 (43.50)
9.01
Dietary salt intake, (%)
0.975
0.006
Salt-light (<6 g/day)
2618 (39.87)
97 (40.59)
3.57
3463 (50.6)
233 (49.68)
6.30
Salt-medium (6–18 g/day)
3313 (50.45)
120 (50.21)
3.50
2975 (43.47)
191 (40.72)
6.03
Salt-heavy (≥18 g/day)
636 (9.68)
22 (9.21)
3.34
406 (5.93)
45 (9.59)
9.98
Residence, (%)
0.159
0.532
City
3158 (48.09)
126 (52.72)
3.84
3371 (49.25)
238 (50.75)
6.59
Rural
3409 (51.91)
113 (47.28)
3.21
3473 (50.75)
231 (49.25)
6.24
Education, (%)
0.146
<0.001
Illiterate
1103 (16.8)
42 (17.57)
3.67
3223 (47.09)
267 (56.93)
7.65
Primary
2348 (35.75)
88 (36.82)
3.61
1824 (26.65)
119 (25.37)
6.12
Junior high school
1634 (24.88)
45 (18.83)
2.68
952 (13.91)
35 (7.46)
3.55
Senior high school and beyond
1482 (22.57)
64 (26.78)
4.14
845 (12.35)
48 (10.23)
5.38
Occupation, (%)
0.485
0.395
Employed
2059 (31.35)
86 (35.98)
4.01
1441 (21.05)
88 (18.76)
5.76
Farmer
2905 (44.24)
101 (42.26)
3.36
2764 (40.39)
195 (41.58)
6.59
Jobless
331 (5.04)
11 (4.60)
3.22
1337 (19.54)
103 (21.96)
7.15
Others
1272 (19.37)
41 (17.15)
3.12
1302 (19.02)
83 (17.70)
5.99
Marital status, (%)
0.433
<0.001
Inmarriage
5575 (84.89)
200 (83.68)
3.46
3839 (56.09)
208 (44.35)
5.14
Single
147 (2.24)
9 (3.77)
5.77
31 (0.45)
3 (0.64)
8.82
Divorced
81 (1.23)
2 (0.84)
2.41
76 (1.11)
3 (0.64)
3.80
Widowed
764 (11.63)
28 (11.72)
3.54
2898 (42.34)
255 (54.37)
8.09
Smoking history, (%)
<0.001
0.293
Never
2139 (32.57)
80 (33.47)
3.61
6340 (92.64)
437 (93.18)
6.45
Sometimes
1558 (23.72)
48 (20.08)
2.99
300 (4.38)
15 (3.20)
4.76
Often
2113 (32.18)
61 (25.52)
2.81
137 (2.00)
9 (1.92)
6.16
Quit
757 (11.53)
50 (20.92)
6.20
67 (0.98)
8 (1.71)
10.67
Alcohol Drinking, (%)
0.235
0.025
Never
2873 (43.75)
106 (44.35)
3.56
6141 (89.73)
423 (90.19)
6.44
Sometimes
2544 (38.74)
87 (36.40)
3.31
607 (8.87)
33 (7.04)
5.16
Often
654 (9.96)
20 (8.37)
2.97
45 (0.66)
4 (0.85)
8.16
Quit
496 (7.55)
26 (10.88)
4.98
51 (0.75)
9 (1.92)
15.00
aPrevalence of cataract. b value of chi-square test to assess the relationship between cataract and the other variables. NOC: number of children; BMI: body mass index.
