Menstrual Characteristics |
|
|
|
|
|
|
Age at menarche |
|
|
|
|
|
|
<=15 |
224 |
33.33 |
639 |
35.56 |
1.00 (Ref) |
1.00 (Ref) |
16–17 |
262 |
38.99 |
689 |
38.34 |
1.20 (0.96, 1.51) |
1.20 (0.96, 1.50) |
> = 18 |
186 |
27.68 |
469 |
26.10 |
1.29 (1.00-, 1.68) |
1.29 (1.00-, 1.66) |
Ptrend4
|
|
|
|
|
0.046 |
0.043 |
As a continuous variable8
|
|
|
|
|
1.05 (1.00-, 1.10) |
1.05 (1.00-, 1.10) |
Age at menopause5
|
|
|
|
|
|
|
<46 |
62 |
9.84 |
189 |
11.09 |
1.00 (Ref) |
1.00 (Ref) |
46–54 |
451 |
71.59 |
1307 |
76.66 |
1.02 (0.73, 1.43) |
1.01 (0.73, 1.38) |
>54 |
117 |
18.57 |
209 |
12.26 |
1.65 (1.10, 2.48) |
1.61 (1.10, 2.36) |
Ptrend
|
|
|
|
|
0.004 |
0.004 |
As a continuous variable8
|
|
|
|
|
1.03 (1.01, 1.06) |
1.03 (1.01, 1.06) |
Reproductive window |
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|
|
|
|
|
<=32 |
227 |
35.80 |
651 |
38.11 |
1.00 (Ref) |
1.00 (Ref) |
33–35 |
181 |
28.55 |
511 |
29.92 |
0.98 (0.76, 1.25) |
0.98 (0.77, 1.24) |
> = 36 |
226 |
35.65 |
546 |
31.97 |
1.10 (0.87, 1.40) |
1.10 (0.87, 1.40) |
Ptrend
|
|
|
|
|
0.441 |
0.406 |
As a continuous variable8
|
|
|
|
|
1.01 (0.99, 1.03) |
1.01 (0.99, 1.03) |
Reproductive History |
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|
|
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|
|
Parity6
|
|
|
|
|
|
|
0 or 1 |
116 |
17.08 |
217 |
12.00 |
1.00 (Ref) |
1.00 (Ref) |
2–3 |
305 |
44.92 |
864 |
47.79 |
0.68 (0.51, 0.91) |
0.70 (0.53, 0.93) |
4 or more |
258 |
38 |
727 |
40.21 |
0.72 (0.53, 0.97) |
0.74 (0.55, 0.99) |
Ptrend
|
|
|
|
|
0.177 |
0.18 |
As a continuous variable8
|
|
|
|
|
0.95 (0.89, 1.01) |
0.95 (0.89, 1.01) |
Gravidity6
|
|
|
|
|
|
|
0 or 1 |
104 |
15.32 |
195 |
10.79 |
1.00 (Ref) |
1.00 (Ref) |
2–3 |
275 |
40.50 |
773 |
42.75 |
0.69 (0.50, 0.93) |
0.71 (0.53, 0.95) |
4 or more |
300 |
44.18 |
840 |
46.46 |
0.78 (0.58, 1.06) |
0.80 (0.60, 1.08) |
Ptrend
|
|
|
|
|
0.583 |
0.587 |
As continuous variable8
|
|
|
|
|
|
|
Number of live birth6
|
|
|
|
|
|
|
0 or 1 |
118 |
17.38 |
226 |
12.50 |
1.00 (Ref) |
1.00 (Ref) |
2–3 |
313 |
46.10 |
887 |
49.06 |
0.69 (0.52, 0.92) |
0.71 (0.54, 0.94) |
4 or more |
248 |
36.52 |
695 |
38.44 |
0.73 (0.54, 0.99) |
0.75 (0.56, 1.01) |
Ptrend
|
|
|
|
|
0.227 |
0.227 |
As a continuous variable8
|
|
|
|
|
0.95 (0.89, 1.01) |
0.95 (0.89, 1.01) |
Life time abortion |
|
|
|
|
|
|
Never |
631 |
92.93 |
1650 |
91.26 |
1.00 (Ref) |
1.00 (Ref) |
Ever |
48 |
7.07 |
158 |
8.74 |
1.03 (0.70, 1.51) |
1.01 (0.70, 1.45) |
As a continuous variable8
|
|
|
|
|
1.08 (0.84, 1.39) |
1.05 (0.83, 1.34) |
Outcome of first pregnancy7
|
|
|
|
|
|
|
Live birth |
631 |
94.89 |
1656 |
94.04 |
1.00 (Ref) |
1.00 (Ref) |
Stillbirth |
19 |
2.86 |
51 |
2.90 |
0.88 (0.48, 1.61) |
0.91 (0.52, 1.58) |
Miscarriage |
14 |
2.11 |
46 |
2.61 |
1.02 (0.53, 1.97) |
1.03 (0.57, 1.87) |
Ectopic Preg |
1 |
0.15 |
1 |
0.06 |
NA |
0.91 (0.24, 3.49) |
Induced abortion |
0 |
0 |
6 |
0.34 |
NA |
NA |
Number of Ovulatory Cycles |
|
|
|
|
|
|
<=368 |
182 |
30.18 |
536 |
33.58 |
1.00 (Ref) |
1.00 (Ref) |
(368, 415] |
192 |
31.84 |
537 |
33.65 |
0.96 (0.74, 1.24) |
0.96 (0.75, 1.23) |
>415 |
229 |
37.98 |
523 |
32.77 |
1.21 (0.94, 1.55) |
1.21 (0.95, 1.55) |
Ptrend
|
|
|
|
|
0.123 |
0.113 |
As a continuous variable (per 13 ovulatory cycles) 8
|
|
|
|
|
1.02 (1.00+, 1.04) |
1.02 (1.00+, 1.04) |
Exogenous Hormone |
|
|
|
|
|
|
Oral Contraceptive use |
|
|
|
|
|
|
Never |
635 |
96.5 |
1649 |
94.66 |
1.00 (Ref) |
1.00 (Ref) |
Ever |
23 |
3.50 |
93 |
5.34 |
0.93 (0.56, 1.55) |
0.93 ((0.58, 1.50) |