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Table 1 Demographic characteristics of pregnant women screened positive for suicidal behavior by diagnostic codes vs. NLP

From: Screening pregnant women for suicidal behavior in electronic medical records: diagnostic codes vs. clinical notes processed by natural language processing

Characteristics Diagnostic codes (N = 196) NLPa(N = 486) P-valuesb Reference groupc(N = 17,183)
  n % n %   n %
Age at the most recent pregnancy with suicidal behaviord 26.8 (6.9) 26.4 (6.2) 0.46 35.7 (8.3)e
Age at the most recent pregnancy with suicidal behaviord    0.14   
  < 16 4 2.04 2 0.41   38 0.22
 [16, 18) 8 4.08 27 5.56   65 0.38
 [18, 20) 16 8.16 53 10.91   205 1.19
 [20, 35) 141 71.94 352 72.43   7594 44.19
  ≥ 35 27 13.78 52 10.70   9281 54.01
Language      0.51   
 English 168 85.71 407 83.74   14,844 86.39
 Spanish 21 10.71 66 13.58   1537 8.94
 Other 7 3.57 13 2.67   802 4.67
Race/ethnicity      0.20   
 Asian 7 3.57 8 1.65   1036 6.03
 Black or African American 41 20.92 80 16.46   1837 10.69
 Hispanic 56 28.57 162 33.33   2677 15.58
 White 87 44.39 211 43.42   10,413 60.60
 Other/Not recorded 5 2.55 25 5.14   1220 7.10
Religion      0.34   
 Christian 75 38.27 221 45.47   5904 34.36
 Catholic 63 32.14 162 33.33   6627 38.57
 Islamic 5 2.55 8 1.65   451 2.62
 Jewish 1 0.51 6 1.23   676 3.93
 No preference/None 27 13.78 49 10.08   1275 7.42
 Other/Unknown/Not recorded 25 12.76 40 8.23   2250 13.09
Marital status      0.15   
 Married/Partner/Common law 42 21.43 144 29.63   10,816 62.95
 Single 140 71.43 316 65.02   4675 27.21
 Separated/Divorced/Widowed 9 4.59 15 3.09   1000 5.82
 Other/Unknown 5 2.55 11 2.26   692 4.03
Vital status      0.04   
 Deceased with date of death 2f 1.02 6f 1.23   168 0.98
 Deceased with date of death unknown 4 2.04 1 0.21   35 0.20
 Not reported as deceased 190 96.94 479 98.56   16,980 98.82
Veteran      0.12   
 No 169 86.22 421 86.63   14,810 86.19
 Yes 3 1.53 1 0.21   75 0.44
 Unknown 24 12.24 64 13.17   2298 13.37
Insurance      0.03   
 Medicaid 97 49.49 210 43.21   3097 18.02
 Medicare 18 9.18 30 6.17   531 3.09
 Private Insurance 63 32.14 217 44.65   12,415 72.25
 Self-pay 8 4.08 11 2.26   488 2.84
 Other 10 5.10 18 3.70   652 3.79
  1. Abbreviations: Natural language processing (NLP)
  2. aRandomly sampled from women aged 10–64 years with at least one diagnostic code related to pregnancy or delivery, matching on age, race, comparative health with women screened positive for suicidal behavior by diagnostic codes using a 1:30 matching ratio
  3. bFor continuous variables, P-value was calculated using the Student’s t test; for categorical variables, P-value was calculated using the Chi-square test.
  4. cRandomly sampled from women aged 10–64 years with at least one diagnostic code related to pregnancy or delivery, matching on comparative health with women screened positive for suicidal behavior by diagnostic codes using a 1:100 matching ratio
  5. dMean (Standard deviation)
  6. eAge at most recent date with diagnostic codes related to pregnancy or delivery
  7. fNone of the deaths occurred within 183 days after suicidal behavior