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Table 2 Mean STAI of the total group and mean STAI for the group that filled in both STAI-1 and STAI-2; decrease in anxiety score from STAI-1 to STAI-2 relative to reported perceptions.

From: GP-initiated preconception counselling in a randomised controlled trial does not induce anxiety

  Total group STAI-1 Group that completed the STAI both prior and post PCC
  n * Mean STAI n * STAI-1 (prior) STAI-2 (post) Reduction in STAI score 95% CI Delta
Women's estimation of their own risk of bearing a child with a congenital disorder        
   Higher than average 54 40.6† 28 37.4 32.6 4.8 [1.5–8.0]
   Average 316 36.4 152 36.9 33.5 3.4 [2.1–4.8]
   Lower than average 94 33.7 42 34.1 30.3 3.9 [0.2–7.4]
Subjective perception of height of estimated risk        
   High 40 42.2 † 19 40.2 33.5 6.7 [2.8–11.6]
   Average 297 36.4 144 36.8 32.6 4.2 [2.6–5.6]
   Low 119 33.7 54 33.9 33.0 0.9 [-1.0–3.3]
How many prevention measures women thought were available        
   Many 189 35.8 92 35.1 31.6 3.5 [1.6–5.3]
   Average 145 37.6 72 37.6 32.5 5.1 [3.0–7.3]
   Few 85 34.9 39 35.9 34.1 1.8 [-0.6–4.2]
   Do not know 33 36.3 19 38.2 37.0 1.2 [-4.2–6.6]
Estimated level of knowledge of prevention measures        
   High 143 34.5‡ 59 33.5 31.5 2.0 [-0.3–4.4]
   Average 231 36.8 116 37.3 33.4 3.9 [2.3–5.5]
   Low 86 38.2 47 38.2 33.0 5.2 [2.2–8.1]
Number of category II risk factors        
   0–4 114 33.8 † 55 34.2 30.6 3.6 [1.7–5.4]
   5–9 292 36.5 135 36.5 32.6 3.9 [2.3–5.4]
   10–14 61 40.2 33 39.9 37.1 2.8 [-1.6–7.3]
Number of category III risk factors        
   0 374 36.3 184 36.5 32.6 3.9 [2.7–5.3]
   1 or more 93 36.5 39 35.8 33.8 2.0 [-1.1–5.1]
  1. *Numbers may differ due to non-response. Test for trend † p-value < 0.0001, ‡ p-value = 0.006.