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Table 3 Data sampled from couples on readiness for twins before beginning fertility treatment, stratified by age.

From: Pre-treatment preferences and characteristics among patients seeking in vitro fertilisation

  Twins would be a very undesirable outcome I would be a little worried about having twins It is irrelevant & I don't care about twins I'm only mildly interested in twins I would be very excited - twins would be highly desirable TOTAL
Age (yrs)       
Wife       
<30   1 (4.5) 3 (13.6) 3 (13.6) 15 (68.2) 22 (10.7)
30-34 1 (1.6) 7 (11.3) 11 (17.7) 7 (11.3) 36 (58.1) 62 (30.1)
35-39 1 (1.3) 17 (21.8) 9 (11.5) 9 (11.5) 42 (53.8) 78 (37.9)
≥40   5 (11.4) 5 (11.4) 4 (9.1) 30 (68.2) 44 (21.4)
TOTAL 2 (1.0) 30 (14.6) 28 (13.6) 23 (11.2) 123 (59.7) 206
Husband       
<30    3 (33.3)   6 (67.3) 9 (4.5)
30-34 1 (1.8) 3 (5.3) 16 (28.1) 5 (8.8) 32 (56.1) 57 (28.4)
35-39 2 (2.6) 13 (17.1) 11 (14.5) 9 (11.8) 41 (53.9) 76 (37.8)
40-44 1 (2.6) 5 (13.2) 9 (23.7) 1 (2.6) 22 (57.9) 38 (18.9)
≥ 45   2 (9.5) 5 (23.8) 2 (9.5) 12 (57.1) 21 (10.4)
TOTAL 4 (2.0) 23 (11.4) 44 (21.9) 17 (8.5) 113 (56.2) 201
  1. Note: Neither maternal age (p = 0.718) nor paternal age (p = 0.656) was associated with anxiety about twins in an upcoming fertility treatment cycle.