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Table 2 Summary of data on readiness for twins as reported by husbands and wives before embarking on fertility treatment.

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
Wife 2 (1.0) 29 (14.6) 28 (13.6) 21 (11.2) 121 (59.7) 206
Husband 4 (2.0) 23 (11.4) 44 (21.9) 17 (8.5) 113 (56.2) 201
  1. Notes: Not all patients answered every question. Cohen's Kappa for agreement, κ = 0.61 (95% CI 0.53 to 0.70) [1000 bootstrap simulations; BCa CI], showed good agreement between husband vs. wives on readiness for twins (77% agreement; κ = 0.61; 95% CI 0.53 to 0.70).