Table 2

Number and rates of sickness certificates issued by reason for consultation.

Read code chapter headingTotal number of certificates issuedSickness certification rate per 1000 person years (95% CI), totala
Infectious/parasitic diseases3652.46 (2.21 to 2.72)
Neoplasms2191.48 (1.28 to 1.67)
Endocrine/metabolic1591.07 (0.91 to 1.24)
Blood diseases240.16 (0.10 to 0.23)
Mental disorders411627.78 (26.94 to 28.68)
Nervous system6534.41 (4.07 to 4.47)
Circulatory system5913.99 (3.67 to 4.31)
Respiratory system10537.11 (6.68 to 7.53)
Digestive system6764.56 (4.22 to 4.91)
Genitourinary system4743.20 (2.91 to 3.49)
Pregnancy/childbirth/puerperium3242.19 (1.95 to 2.42)
Skin/subcutaneous tissue3972.68 (2.42 to 2.94)
Musculoskeletal338422.84 (22.08 to 23.60)
Congenital anomalies130.09 (0.04 to 0.14)
Ill-defined conditions/working diagnoses9836.63 (6.22 to 7.05)
Injury/poisoning11547.79 (7.34 to 8.24)
Causes of injury/poisoning1220.82 (0.68 to 0.97)
Post-operativeb3252.19 (1.96 to 2.43)
Unknown reasonc5954.02 (3.69 to 4.34)
  • a Rates are not presented by sex, as the numbers are small.

  • b Not a Read code label, but included as many certificates were labelled as post-operative without a condition attached.

  • c Not a Read code label.